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authorLinus Torvalds <torvalds@linux-foundation.org>2022-10-06 11:51:49 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2022-10-06 11:51:49 -0700
commit18fd049731e67651009f316195da9281b756f2cf (patch)
tree082c87950f33bc466672ea3fd2ea24e5b2a37253 /arch
parent41fc64a0550b86f4428e8d3fa23ab97678a65ae8 (diff)
parentd2995249a2f72333a4ab4922ff3c42a76c023791 (diff)
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas: - arm64 perf: DDR PMU driver for Alibaba's T-Head Yitian 710 SoC, SVE vector granule register added to the user regs together with SVE perf extensions documentation. - SVE updates: add HWCAP for SVE EBF16, update the SVE ABI documentation to match the actual kernel behaviour (zeroing the registers on syscall rather than "zeroed or preserved" previously). - More conversions to automatic system registers generation. - vDSO: use self-synchronising virtual counter access in gettimeofday() if the architecture supports it. - arm64 stacktrace cleanups and improvements. - arm64 atomics improvements: always inline assembly, remove LL/SC trampolines. - Improve the reporting of EL1 exceptions: rework BTI and FPAC exception handling, better EL1 undefs reporting. - Cortex-A510 erratum 2658417: remove BF16 support due to incorrect result. - arm64 defconfig updates: build CoreSight as a module, enable options necessary for docker, memory hotplug/hotremove, enable all PMUs provided by Arm. - arm64 ptrace() support for TPIDR2_EL0 (register provided with the SME extensions). - arm64 ftraces updates/fixes: fix module PLTs with mcount, remove unused function. - kselftest updates for arm64: simple HWCAP validation, FP stress test improvements, validation of ZA regs in signal handlers, include larger SVE and SME vector lengths in signal tests, various cleanups. - arm64 alternatives (code patching) improvements to robustness and consistency: replace cpucap static branches with equivalent alternatives, associate callback alternatives with a cpucap. - Miscellaneous updates: optimise kprobe performance of patching single-step slots, simplify uaccess_mask_ptr(), move MTE registers initialisation to C, support huge vmalloc() mappings, run softirqs on the per-CPU IRQ stack, compat (arm32) misalignment fixups for multiword accesses. * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (126 commits) arm64: alternatives: Use vdso/bits.h instead of linux/bits.h arm64/kprobe: Optimize the performance of patching single-step slot arm64: defconfig: Add Coresight as module kselftest/arm64: Handle EINTR while reading data from children kselftest/arm64: Flag fp-stress as exiting when we begin finishing up kselftest/arm64: Don't repeat termination handler for fp-stress ARM64: reloc_test: add __init/__exit annotations to module init/exit funcs arm64/mm: fold check for KFENCE into can_set_direct_map() arm64: ftrace: fix module PLTs with mcount arm64: module: Remove unused plt_entry_is_initialized() arm64: module: Make plt_equals_entry() static arm64: fix the build with binutils 2.27 kselftest/arm64: Don't enable v8.5 for MTE selftest builds arm64: uaccess: simplify uaccess_mask_ptr() arm64: asm/perf_regs.h: Avoid C++-style comment in UAPI header kselftest/arm64: Fix typo in hwcap check arm64: mte: move register initialization to C arm64: mm: handle ARM64_KERNEL_USES_PMD_MAPS in vmemmap_populate() arm64: dma: Drop cache invalidation from arch_dma_prep_coherent() arm64/sve: Add Perf extensions documentation ...
Diffstat (limited to 'arch')
-rw-r--r--arch/arm64/Kconfig18
-rw-r--r--arch/arm64/configs/defconfig17
-rw-r--r--arch/arm64/include/asm/alternative-macros.h66
-rw-r--r--arch/arm64/include/asm/assembler.h20
-rw-r--r--arch/arm64/include/asm/atomic_ll_sc.h58
-rw-r--r--arch/arm64/include/asm/atomic_lse.h46
-rw-r--r--arch/arm64/include/asm/cache.h4
-rw-r--r--arch/arm64/include/asm/cpufeature.h83
-rw-r--r--arch/arm64/include/asm/el2_setup.h18
-rw-r--r--arch/arm64/include/asm/exception.h9
-rw-r--r--arch/arm64/include/asm/hw_breakpoint.h4
-rw-r--r--arch/arm64/include/asm/hwcap.h1
-rw-r--r--arch/arm64/include/asm/kvm_mmu.h5
-rw-r--r--arch/arm64/include/asm/kvm_pgtable.h6
-rw-r--r--arch/arm64/include/asm/lse.h5
-rw-r--r--arch/arm64/include/asm/module.h15
-rw-r--r--arch/arm64/include/asm/mte.h5
-rw-r--r--arch/arm64/include/asm/processor.h2
-rw-r--r--arch/arm64/include/asm/sdei.h17
-rw-r--r--arch/arm64/include/asm/stacktrace.h71
-rw-r--r--arch/arm64/include/asm/stacktrace/common.h221
-rw-r--r--arch/arm64/include/asm/stacktrace/nvhe.h4
-rw-r--r--arch/arm64/include/asm/sysreg.h211
-rw-r--r--arch/arm64/include/asm/system_misc.h2
-rw-r--r--arch/arm64/include/asm/uaccess.h22
-rw-r--r--arch/arm64/include/asm/vdso.h3
-rw-r--r--arch/arm64/include/asm/vdso/gettimeofday.h19
-rw-r--r--arch/arm64/include/uapi/asm/hwcap.h1
-rw-r--r--arch/arm64/include/uapi/asm/perf_regs.h7
-rw-r--r--arch/arm64/kernel/Makefile1
-rw-r--r--arch/arm64/kernel/alternative.c92
-rw-r--r--arch/arm64/kernel/compat_alignment.c387
-rw-r--r--arch/arm64/kernel/cpu_errata.c26
-rw-r--r--arch/arm64/kernel/cpufeature.c325
-rw-r--r--arch/arm64/kernel/cpuinfo.c1
-rw-r--r--arch/arm64/kernel/debug-monitors.c2
-rw-r--r--arch/arm64/kernel/entry-common.c32
-rw-r--r--arch/arm64/kernel/entry.S8
-rw-r--r--arch/arm64/kernel/ftrace.c17
-rw-r--r--arch/arm64/kernel/head.S10
-rw-r--r--arch/arm64/kernel/hyp-stub.S8
-rw-r--r--arch/arm64/kernel/idreg-override.c10
-rw-r--r--arch/arm64/kernel/image-vars.h5
-rw-r--r--arch/arm64/kernel/irq.c14
-rw-r--r--arch/arm64/kernel/module-plts.c3
-rw-r--r--arch/arm64/kernel/module.c15
-rw-r--r--arch/arm64/kernel/mte.c51
-rw-r--r--arch/arm64/kernel/perf_event.c8
-rw-r--r--arch/arm64/kernel/perf_regs.c30
-rw-r--r--arch/arm64/kernel/probes/kprobes.c27
-rw-r--r--arch/arm64/kernel/proton-pack.c16
-rw-r--r--arch/arm64/kernel/ptrace.c27
-rw-r--r--arch/arm64/kernel/reloc_test_core.c4
-rw-r--r--arch/arm64/kernel/sdei.c32
-rw-r--r--arch/arm64/kernel/stacktrace.c66
-rw-r--r--arch/arm64/kernel/suspend.c2
-rw-r--r--arch/arm64/kernel/traps.c48
-rw-r--r--arch/arm64/kernel/vdso.c3
-rw-r--r--arch/arm64/kernel/vdso/vdso.lds.S7
-rw-r--r--arch/arm64/kvm/debug.c4
-rw-r--r--arch/arm64/kvm/hyp/hyp-entry.S4
-rw-r--r--arch/arm64/kvm/hyp/include/nvhe/fixed_config.h60
-rw-r--r--arch/arm64/kvm/hyp/nvhe/pkvm.c38
-rw-r--r--arch/arm64/kvm/hyp/nvhe/stacktrace.c40
-rw-r--r--arch/arm64/kvm/hyp/nvhe/sys_regs.c10
-rw-r--r--arch/arm64/kvm/hyp/pgtable.c2
-rw-r--r--arch/arm64/kvm/pmu-emul.c16
-rw-r--r--arch/arm64/kvm/reset.c12
-rw-r--r--arch/arm64/kvm/stacktrace.c137
-rw-r--r--arch/arm64/kvm/sys_regs.c48
-rw-r--r--arch/arm64/kvm/va_layout.c5
-rw-r--r--arch/arm64/mm/context.c6
-rw-r--r--arch/arm64/mm/dma-mapping.c2
-rw-r--r--arch/arm64/mm/fault.c3
-rw-r--r--arch/arm64/mm/init.c2
-rw-r--r--arch/arm64/mm/mmu.c23
-rw-r--r--arch/arm64/mm/pageattr.c8
-rw-r--r--arch/arm64/mm/proc.S46
-rw-r--r--arch/arm64/tools/cpucaps3
-rw-r--r--arch/arm64/tools/sysreg449
80 files changed, 2079 insertions, 1076 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 1ce7685ad5de..0e48d1e4c578 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -149,6 +149,7 @@ config ARM64
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_BITREVERSE
select HAVE_ARCH_COMPILER_H
+ select HAVE_ARCH_HUGE_VMALLOC
select HAVE_ARCH_HUGE_VMAP
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_JUMP_LABEL_RELATIVE
@@ -230,6 +231,7 @@ config ARM64
select HAVE_ARCH_USERFAULTFD_MINOR if USERFAULTFD
select TRACE_IRQFLAGS_SUPPORT
select TRACE_IRQFLAGS_NMI_SUPPORT
+ select HAVE_SOFTIRQ_ON_OWN_STACK
help
ARM 64-bit (AArch64) Linux support.
@@ -733,6 +735,19 @@ config ARM64_ERRATUM_2077057
If unsure, say Y.
+config ARM64_ERRATUM_2658417
+ bool "Cortex-A510: 2658417: remove BF16 support due to incorrect result"
+ default y
+ help
+ This option adds the workaround for ARM Cortex-A510 erratum 2658417.
+ Affected Cortex-A510 (r0p0 to r1p1) may produce the wrong result for
+ BFMMLA or VMMLA instructions in rare circumstances when a pair of
+ A510 CPUs are using shared neon hardware. As the sharing is not
+ discoverable by the kernel, hide the BF16 HWCAP to indicate that
+ user-space should not be using these instructions.
+
+ If unsure, say Y.
+
config ARM64_ERRATUM_2119858
bool "Cortex-A710/X2: 2119858: workaround TRBE overwriting trace data in FILL mode"
default y
@@ -1562,6 +1577,9 @@ config THUMB2_COMPAT_VDSO
Compile the compat vDSO with '-mthumb -fomit-frame-pointer' if y,
otherwise with '-marm'.
+config COMPAT_ALIGNMENT_FIXUPS
+ bool "Fix up misaligned multi-word loads and stores in user space"
+
menuconfig ARMV8_DEPRECATED
bool "Emulate deprecated/obsolete ARMv8 instructions"
depends on SYSCTL
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 297ad5b7939b..7b49c80286be 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -18,6 +18,7 @@ CONFIG_NUMA_BALANCING=y
CONFIG_MEMCG=y
CONFIG_BLK_CGROUP=y
CONFIG_CGROUP_PIDS=y
+CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_HUGETLB=y
CONFIG_CPUSETS=y
CONFIG_CGROUP_DEVICE=y
@@ -102,6 +103,8 @@ CONFIG_ARM_SCMI_CPUFREQ=y
CONFIG_ARM_TEGRA186_CPUFREQ=y
CONFIG_QORIQ_CPUFREQ=y
CONFIG_ACPI=y
+CONFIG_ACPI_HOTPLUG_MEMORY=y
+CONFIG_ACPI_HMAT=y
CONFIG_ACPI_APEI=y
CONFIG_ACPI_APEI_GHES=y
CONFIG_ACPI_APEI_PCIEAER=y
@@ -126,6 +129,8 @@ CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
# CONFIG_COMPAT_BRK is not set
+CONFIG_MEMORY_HOTPLUG=y
+CONFIG_MEMORY_HOTREMOVE=y
CONFIG_KSM=y
CONFIG_MEMORY_FAILURE=y
CONFIG_TRANSPARENT_HUGEPAGE=y
@@ -139,12 +144,16 @@ CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IPV6=m
CONFIG_NETFILTER=y
+CONFIG_BRIDGE_NETFILTER=m
CONFIG_NF_CONNTRACK=m
CONFIG_NF_CONNTRACK_EVENTS=y
+CONFIG_NETFILTER_XT_MARK=m
CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m
CONFIG_NETFILTER_XT_TARGET_LOG=m
CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=m
CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
+CONFIG_NETFILTER_XT_MATCH_IPVS=m
+CONFIG_IP_VS=m
CONFIG_IP_NF_IPTABLES=m
CONFIG_IP_NF_FILTER=m
CONFIG_IP_NF_TARGET_REJECT=m
@@ -1349,4 +1358,12 @@ CONFIG_DEBUG_FS=y
# CONFIG_SCHED_DEBUG is not set
# CONFIG_DEBUG_PREEMPT is not set
# CONFIG_FTRACE is not set
+CONFIG_CORESIGHT=m
+CONFIG_CORESIGHT_LINK_AND_SINK_TMC=m
+CONFIG_CORESIGHT_CATU=m
+CONFIG_CORESIGHT_SINK_TPIU=m
+CONFIG_CORESIGHT_SINK_ETBV10=m
+CONFIG_CORESIGHT_STM=m
+CONFIG_CORESIGHT_CPU_DEBUG=m
+CONFIG_CORESIGHT_CTI=m
CONFIG_MEMTEST=y
diff --git a/arch/arm64/include/asm/alternative-macros.h b/arch/arm64/include/asm/alternative-macros.h
index 7e157ab6cd50..3622e9f4fb44 100644
--- a/arch/arm64/include/asm/alternative-macros.h
+++ b/arch/arm64/include/asm/alternative-macros.h
@@ -2,10 +2,22 @@
#ifndef __ASM_ALTERNATIVE_MACROS_H
#define __ASM_ALTERNATIVE_MACROS_H
+#include <linux/const.h>
+#include <vdso/bits.h>
+
#include <asm/cpucaps.h>
#include <asm/insn-def.h>
-#define ARM64_CB_PATCH ARM64_NCAPS
+/*
+ * Binutils 2.27.0 can't handle a 'UL' suffix on constants, so for the assembly
+ * macros below we must use we must use `(1 << ARM64_CB_SHIFT)`.
+ */
+#define ARM64_CB_SHIFT 15
+#define ARM64_CB_BIT BIT(ARM64_CB_SHIFT)
+
+#if ARM64_NCAPS >= ARM64_CB_BIT
+#error "cpucaps have overflown ARM64_CB_BIT"
+#endif
#ifndef __ASSEMBLY__
@@ -73,8 +85,8 @@
#define _ALTERNATIVE_CFG(oldinstr, newinstr, feature, cfg, ...) \
__ALTERNATIVE_CFG(oldinstr, newinstr, feature, IS_ENABLED(cfg))
-#define ALTERNATIVE_CB(oldinstr, cb) \
- __ALTERNATIVE_CFG_CB(oldinstr, ARM64_CB_PATCH, 1, cb)
+#define ALTERNATIVE_CB(oldinstr, feature, cb) \
+ __ALTERNATIVE_CFG_CB(oldinstr, (1 << ARM64_CB_SHIFT) | (feature), 1, cb)
#else
#include <asm/assembler.h>
@@ -82,7 +94,7 @@
.macro altinstruction_entry orig_offset alt_offset feature orig_len alt_len
.word \orig_offset - .
.word \alt_offset - .
- .hword \feature
+ .hword (\feature)
.byte \orig_len
.byte \alt_len
.endm
@@ -141,10 +153,10 @@
661:
.endm
-.macro alternative_cb cb
+.macro alternative_cb cap, cb
.set .Lasm_alt_mode, 0
.pushsection .altinstructions, "a"
- altinstruction_entry 661f, \cb, ARM64_CB_PATCH, 662f-661f, 0
+ altinstruction_entry 661f, \cb, (1 << ARM64_CB_SHIFT) | \cap, 662f-661f, 0
.popsection
661:
.endm
@@ -207,4 +219,46 @@ alternative_endif
#define ALTERNATIVE(oldinstr, newinstr, ...) \
_ALTERNATIVE_CFG(oldinstr, newinstr, __VA_ARGS__, 1)
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+
+static __always_inline bool
+alternative_has_feature_likely(unsigned long feature)
+{
+ compiletime_assert(feature < ARM64_NCAPS,
+ "feature must be < ARM64_NCAPS");
+
+ asm_volatile_goto(
+ ALTERNATIVE_CB("b %l[l_no]", %[feature], alt_cb_patch_nops)
+ :
+ : [feature] "i" (feature)
+ :
+ : l_no);
+
+ return true;
+l_no:
+ return false;
+}
+
+static __always_inline bool
+alternative_has_feature_unlikely(unsigned long feature)
+{
+ compiletime_assert(feature < ARM64_NCAPS,
+ "feature must be < ARM64_NCAPS");
+
+ asm_volatile_goto(
+ ALTERNATIVE("nop", "b %l[l_yes]", %[feature])
+ :
+ : [feature] "i" (feature)
+ :
+ : l_yes);
+
+ return false;
+l_yes:
+ return true;
+}
+
+#endif /* __ASSEMBLY__ */
+
#endif /* __ASM_ALTERNATIVE_MACROS_H */
diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h
index 5846145be523..e5957a53be39 100644
--- a/arch/arm64/include/asm/assembler.h
+++ b/arch/arm64/include/asm/assembler.h
@@ -293,7 +293,7 @@ alternative_endif
alternative_if_not ARM64_KVM_PROTECTED_MODE
ASM_BUG()
alternative_else_nop_endif
-alternative_cb kvm_compute_final_ctr_el0
+alternative_cb ARM64_ALWAYS_SYSTEM, kvm_compute_final_ctr_el0
movz \reg, #0
movk \reg, #0, lsl #16
movk \reg, #0, lsl #32
@@ -384,8 +384,8 @@ alternative_cb_end
.macro tcr_compute_pa_size, tcr, pos, tmp0, tmp1
mrs \tmp0, ID_AA64MMFR0_EL1
// Narrow PARange to fit the PS field in TCR_ELx
- ubfx \tmp0, \tmp0, #ID_AA64MMFR0_PARANGE_SHIFT, #3
- mov \tmp1, #ID_AA64MMFR0_PARANGE_MAX
+ ubfx \tmp0, \tmp0, #ID_AA64MMFR0_EL1_PARANGE_SHIFT, #3
+ mov \tmp1, #ID_AA64MMFR0_EL1_PARANGE_MAX
cmp \tmp0, \tmp1
csel \tmp0, \tmp1, \tmp0, hi
bfi \tcr, \tmp0, \pos, #3
@@ -512,7 +512,7 @@ alternative_endif
*/
.macro reset_pmuserenr_el0, tmpreg
mrs \tmpreg, id_aa64dfr0_el1
- sbfx \tmpreg, \tmpreg, #ID_AA64DFR0_PMUVER_SHIFT, #4
+ sbfx \tmpreg, \tmpreg, #ID_AA64DFR0_EL1_PMUVer_SHIFT, #4
cmp \tmpreg, #1 // Skip if no PMU present
b.lt 9000f
msr pmuserenr_el0, xzr // Disable PMU access from EL0
@@ -524,7 +524,7 @@ alternative_endif
*/
.macro reset_amuserenr_el0, tmpreg
mrs \tmpreg, id_aa64pfr0_el1 // Check ID_AA64PFR0_EL1
- ubfx \tmpreg, \tmpreg, #ID_AA64PFR0_AMU_SHIFT, #4
+ ubfx \tmpreg, \tmpreg, #ID_AA64PFR0_EL1_AMU_SHIFT, #4
cbz \tmpreg, .Lskip_\@ // Skip if no AMU present
msr_s SYS_AMUSERENR_EL0, xzr // Disable AMU access from EL0
.Lskip_\@:
@@ -612,7 +612,7 @@ alternative_endif
.macro offset_ttbr1, ttbr, tmp
#ifdef CONFIG_ARM64_VA_BITS_52
mrs_s \tmp, SYS_ID_AA64MMFR2_EL1
- and \tmp, \tmp, #(0xf << ID_AA64MMFR2_LVA_SHIFT)
+ and \tmp, \tmp, #(0xf << ID_AA64MMFR2_EL1_VARange_SHIFT)
cbnz \tmp, .Lskipoffs_\@
orr \ttbr, \ttbr, #TTBR1_BADDR_4852_OFFSET
.Lskipoffs_\@ :
@@ -877,7 +877,7 @@ alternative_endif
.macro __mitigate_spectre_bhb_loop tmp
#ifdef CONFIG_MITIGATE_SPECTRE_BRANCH_HISTORY
-alternative_cb spectre_bhb_patch_loop_iter
+alternative_cb ARM64_ALWAYS_SYSTEM, spectre_bhb_patch_loop_iter
mov \tmp, #32 // Patched to correct the immediate
alternative_cb_end
.Lspectre_bhb_loop\@:
@@ -890,7 +890,7 @@ alternative_cb_end
.macro mitigate_spectre_bhb_loop tmp
#ifdef CONFIG_MITIGATE_SPECTRE_BRANCH_HISTORY
-alternative_cb spectre_bhb_patch_loop_mitigation_enable
+alternative_cb ARM64_ALWAYS_SYSTEM, spectre_bhb_patch_loop_mitigation_enable
b .L_spectre_bhb_loop_done\@ // Patched to NOP
alternative_cb_end
__mitigate_spectre_bhb_loop \tmp
@@ -904,7 +904,7 @@ alternative_cb_end
stp x0, x1, [sp, #-16]!
stp x2, x3, [sp, #-16]!
mov w0, #ARM_SMCCC_ARCH_WORKAROUND_3
-alternative_cb smccc_patch_fw_mitigation_conduit
+alternative_cb ARM64_ALWAYS_SYSTEM, smccc_patch_fw_mitigation_conduit
nop // Patched to SMC/HVC #0
alternative_cb_end
ldp x2, x3, [sp], #16
@@ -914,7 +914,7 @@ alternative_cb_end
.macro mitigate_spectre_bhb_clear_insn
#ifdef CONFIG_MITIGATE_SPECTRE_BRANCH_HISTORY
-alternative_cb spectre_bhb_patch_clearbhb
+alternative_cb ARM64_ALWAYS_SYSTEM, spectre_bhb_patch_clearbhb
/* Patched to NOP when not supported */
clearbhb
isb
diff --git a/arch/arm64/include/asm/atomic_ll_sc.h b/arch/arm64/include/asm/atomic_ll_sc.h
index fe0db8d416fb..0890e4f568fb 100644
--- a/arch/arm64/include/asm/atomic_ll_sc.h
+++ b/arch/arm64/include/asm/atomic_ll_sc.h
@@ -12,19 +12,6 @@
#include <linux/stringify.h>
-#ifdef CONFIG_ARM64_LSE_ATOMICS
-#define __LL_SC_FALLBACK(asm_ops) \
-" b 3f\n" \
-" .subsection 1\n" \
-"3:\n" \
-asm_ops "\n" \
-" b 4f\n" \
-" .previous\n" \
-"4:\n"
-#else
-#define __LL_SC_FALLBACK(asm_ops) asm_ops
-#endif
-
#ifndef CONFIG_CC_HAS_K_CONSTRAINT
#define K
#endif
@@ -36,38 +23,36 @@ asm_ops "\n" \
*/
#define ATOMIC_OP(op, asm_op, constraint) \
-static inline void \
+static __always_inline void \
__ll_sc_atomic_##op(int i, atomic_t *v) \
{ \
unsigned long tmp; \
int result; \
\
asm volatile("// atomic_" #op "\n" \
- __LL_SC_FALLBACK( \
" prfm pstl1strm, %2\n" \
"1: ldxr %w0, %2\n" \
" " #asm_op " %w0, %w0, %w3\n" \
" stxr %w1, %w0, %2\n" \
- " cbnz %w1, 1b\n") \
+ " cbnz %w1, 1b\n" \
: "=&r" (result), "=&r" (tmp), "+Q" (v->counter) \
: __stringify(constraint) "r" (i)); \
}
#define ATOMIC_OP_RETURN(name, mb, acq, rel, cl, op, asm_op, constraint)\
-static inline int \
+static __always_inline int \
__ll_sc_atomic_##op##_return##name(int i, atomic_t *v) \
{ \
unsigned long tmp; \
int result; \
\
asm volatile("// atomic_" #op "_return" #name "\n" \
- __LL_SC_FALLBACK( \
" prfm pstl1strm, %2\n" \
"1: ld" #acq "xr %w0, %2\n" \
" " #asm_op " %w0, %w0, %w3\n" \
" st" #rel "xr %w1, %w0, %2\n" \
" cbnz %w1, 1b\n" \
- " " #mb ) \
+ " " #mb \
: "=&r" (result), "=&r" (tmp), "+Q" (v->counter) \
: __stringify(constraint) "r" (i) \
: cl); \
@@ -76,20 +61,19 @@ __ll_sc_atomic_##op##_return##name(int i, atomic_t *v) \
}
#define ATOMIC_FETCH_OP(name, mb, acq, rel, cl, op, asm_op, constraint) \
-static inline int \
+static __always_inline int \
__ll_sc_atomic_fetch_##op##name(int i, atomic_t *v) \
{ \
unsigned long tmp; \
int val, result; \
\
asm volatile("// atomic_fetch_" #op #name "\n" \
- __LL_SC_FALLBACK( \
" prfm pstl1strm, %3\n" \
"1: ld" #acq "xr %w0, %3\n" \
" " #asm_op " %w1, %w0, %w4\n" \
" st" #rel "xr %w2, %w1, %3\n" \
" cbnz %w2, 1b\n" \
- " " #mb ) \
+ " " #mb \
: "=&r" (result), "=&r" (val), "=&r" (tmp), "+Q" (v->counter) \
: __stringify(constraint) "r" (i) \
: cl); \
@@ -135,38 +119,36 @@ ATOMIC_OPS(andnot, bic, )
#undef ATOMIC_OP
#define ATOMIC64_OP(op, asm_op, constraint) \
-static inline void \
+static __always_inline void \
__ll_sc_atomic64_##op(s64 i, atomic64_t *v) \
{ \
s64 result; \
unsigned long tmp; \
\
asm volatile("// atomic64_" #op "\n" \
- __LL_SC_FALLBACK( \
" prfm pstl1strm, %2\n" \
"1: ldxr %0, %2\n" \
" " #asm_op " %0, %0, %3\n" \
" stxr %w1, %0, %2\n" \
- " cbnz %w1, 1b") \
+ " cbnz %w1, 1b" \
: "=&r" (result), "=&r" (tmp), "+Q" (v->counter) \
: __stringify(constraint) "r" (i)); \
}
#define ATOMIC64_OP_RETURN(name, mb, acq, rel, cl, op, asm_op, constraint)\
-static inline long \
+static __always_inline long \
__ll_sc_atomic64_##op##_return##name(s64 i, atomic64_t *v) \
{ \
s64 result; \
unsigned long tmp; \
\
asm volatile("// atomic64_" #op "_return" #name "\n" \
- __LL_SC_FALLBACK( \
" prfm pstl1strm, %2\n" \
"1: ld" #acq "xr %0, %2\n" \
" " #asm_op " %0, %0, %3\n" \
" st" #rel "xr %w1, %0, %2\n" \
" cbnz %w1, 1b\n" \
- " " #mb ) \
+ " " #mb \
: "=&r" (result), "=&r" (tmp), "+Q" (v->counter) \
: __stringify(constraint) "r" (i) \
: cl); \
@@ -175,20 +157,19 @@ __ll_sc_atomic64_##op##_return##name(s64 i, atomic64_t *v) \
}
#define ATOMIC64_FETCH_OP(name, mb, acq, rel, cl, op, asm_op, constraint)\
-static inline long \
+static __always_inline long \
__ll_sc_atomic64_fetch_##op##name(s64 i, atomic64_t *v) \
{ \
s64 result, val; \
unsigned long tmp; \
\
asm volatile("// atomic64_fetch_" #op #name "\n" \
- __LL_SC_FALLBACK( \
" prfm pstl1strm, %3\n" \
"1: ld" #acq "xr %0, %3\n" \
" " #asm_op " %1, %0, %4\n" \
" st" #rel "xr %w2, %1, %3\n" \
" cbnz %w2, 1b\n" \
- " " #mb ) \
+ " " #mb \
: "=&r" (result), "=&r" (val), "=&r" (tmp), "+Q" (v->counter) \
: __stringify(constraint) "r" (i) \
: cl); \
@@ -233,14 +214,13 @@ ATOMIC64_OPS(andnot, bic, )
#undef ATOMIC64_OP_RETURN
#undef ATOMIC64_OP
-static inline s64
+static __always_inline s64
__ll_sc_atomic64_dec_if_positive(atomic64_t *v)
{
s64 result;
unsigned long tmp;
asm volatile("// atomic64_dec_if_positive\n"
- __LL_SC_FALLBACK(
" prfm pstl1strm, %2\n"
"1: ldxr %0, %2\n"
" subs %0, %0, #1\n"
@@ -248,7 +228,7 @@ __ll_sc_atomic64_dec_if_positive(atomic64_t *v)
" stlxr %w1, %0, %2\n"
" cbnz %w1, 1b\n"
" dmb ish\n"
- "2:")
+ "2:"
: "=&r" (result), "=&r" (tmp), "+Q" (v->counter)
:
: "cc", "memory");
@@ -257,7 +237,7 @@ __ll_sc_atomic64_dec_if_positive(atomic64_t *v)
}
#define __CMPXCHG_CASE(w, sfx, name, sz, mb, acq, rel, cl, constraint) \
-static inline u##sz \
+static __always_inline u##sz \
__ll_sc__cmpxchg_case_##name##sz(volatile void *ptr, \
unsigned long old, \
u##sz new) \
@@ -274,7 +254,6 @@ __ll_sc__cmpxchg_case_##name##sz(volatile void *ptr, \
old = (u##sz)old; \
\
asm volatile( \
- __LL_SC_FALLBACK( \
" prfm pstl1strm, %[v]\n" \
"1: ld" #acq "xr" #sfx "\t%" #w "[oldval], %[v]\n" \
" eor %" #w "[tmp], %" #w "[oldval], %" #w "[old]\n" \
@@ -282,7 +261,7 @@ __ll_sc__cmpxchg_case_##name##sz(volatile void *ptr, \
" st" #rel "xr" #sfx "\t%w[tmp], %" #w "[new], %[v]\n" \
" cbnz %w[tmp], 1b\n" \
" " #mb "\n" \
- "2:") \
+ "2:" \
: [tmp] "=&r" (tmp), [oldval] "=&r" (oldval), \
[v] "+Q" (*(u##sz *)ptr) \
: [old] __stringify(constraint) "r" (old), [new] "r" (new) \
@@ -316,7 +295,7 @@ __CMPXCHG_CASE( , , mb_, 64, dmb ish, , l, "memory", L)
#undef __CMPXCHG_CASE
#define __CMPXCHG_DBL(name, mb, rel, cl) \
-static inline long \
+static __always_inline long \
__ll_sc__cmpxchg_double##name(unsigned long old1, \
unsigned long old2, \
unsigned long new1, \
@@ -326,7 +305,6 @@ __ll_sc__cmpxchg_double##name(unsigned long old1, \
unsigned long tmp, ret; \
\
asm volatile("// __cmpxchg_double" #name "\n" \
- __LL_SC_FALLBACK( \
" prfm pstl1strm, %2\n" \
"1: ldxp %0, %1, %2\n" \
" eor %0, %0, %3\n" \
@@ -336,7 +314,7 @@ __ll_sc__cmpxchg_double##name(unsigned long old1, \
" st" #rel "xp %w0, %5, %6, %2\n" \
" cbnz %w0, 1b\n" \
" " #mb "\n" \
- "2:") \
+ "2:" \
: "=&r" (tmp), "=&r" (ret), "+Q" (*(unsigned long *)ptr) \
: "r" (old1), "r" (old2), "r" (new1), "r" (new2) \
: cl); \
diff --git a/arch/arm64/include/asm/atomic_lse.h b/arch/arm64/include/asm/atomic_lse.h
index 5d460f6b7675..52075e93de6c 100644
--- a/arch/arm64/include/asm/atomic_lse.h
+++ b/arch/arm64/include/asm/atomic_lse.h
@@ -11,7 +11,8 @@
#define __ASM_ATOMIC_LSE_H
#define ATOMIC_OP(op, asm_op) \
-static inline void __lse_atomic_##op(int i, atomic_t *v) \
+static __always_inline void \
+__lse_atomic_##op(int i, atomic_t *v) \
{ \
asm volatile( \
__LSE_PREAMBLE \
@@ -25,7 +26,7 @@ ATOMIC_OP(or, stset)
ATOMIC_OP(xor, steor)
ATOMIC_OP(add, stadd)
-static inline void __lse_atomic_sub(int i, atomic_t *v)
+static __always_inline void __lse_atomic_sub(int i, atomic_t *v)
{
__lse_atomic_add(-i, v);
}
@@ -33,7 +34,8 @@ static inline void __lse_atomic_sub(int i, atomic_t *v)
#undef ATOMIC_OP
#define ATOMIC_FETCH_OP(name, mb, op, asm_op, cl...) \
-static inline int __lse_atomic_fetch_##op##name(int i, atomic_t *v) \
+static __always_inline int \
+__lse_atomic_fetch_##op##name(int i, atomic_t *v) \
{ \
int old; \
\
@@ -63,7 +65,8 @@ ATOMIC_FETCH_OPS(add, ldadd)
#undef ATOMIC_FETCH_OPS
#define ATOMIC_FETCH_OP_SUB(name) \
-static inline int __lse_atomic_fetch_sub##name(int i, atomic_t *v) \
+static __always_inline int \
+__lse_atomic_fetch_sub##name(int i, atomic_t *v) \
{ \
return __lse_atomic_fetch_add##name(-i, v); \
}
@@ -76,12 +79,14 @@ ATOMIC_FETCH_OP_SUB( )
#undef ATOMIC_FETCH_OP_SUB
#define ATOMIC_OP_ADD_SUB_RETURN(name) \
-static inline int __lse_atomic_add_return##name(int i, atomic_t *v) \
+static __always_inline int \
+__lse_atomic_add_return##name(int i, atomic_t *v) \
{ \
return __lse_atomic_fetch_add##name(i, v) + i; \
} \
\
-static inline int __lse_atomic_sub_return##name(int i, atomic_t *v) \
+static __always_inline int \
+__lse_atomic_sub_return##name(int i, atomic_t *v) \
{ \
return __lse_atomic_fetch_sub(i, v) - i; \
}
@@ -93,13 +98,14 @@ ATOMIC_OP_ADD_SUB_RETURN( )
#undef ATOMIC_OP_ADD_SUB_RETURN
-static inline void __lse_atomic_and(int i, atomic_t *v)
+static __always_inline void __lse_atomic_and(int i, atomic_t *v)
{
return __lse_atomic_andnot(~i, v);
}
#define ATOMIC_FETCH_OP_AND(name, mb, cl...) \
-static inline int __lse_atomic_fetch_and##name(int i, atomic_t *v) \
+static __always_inline int \
+__lse_atomic_fetch_and##name(int i, atomic_t *v) \
{ \
return __lse_atomic_fetch_andnot##name(~i, v); \
}
@@ -112,7 +118,8 @@ ATOMIC_FETCH_OP_AND( , al, "memory")
#undef ATOMIC_FETCH_OP_AND
#define ATOMIC64_OP(op, asm_op) \
-static inline void __lse_atomic64_##op(s64 i, atomic64_t *v) \
+static __always_inline void \
+__lse_atomic64_##op(s64 i, atomic64_t *v) \
{ \
asm volatile( \
__LSE_PREAMBLE \
@@ -126,7 +133,7 @@ ATOMIC64_OP(or, stset)
ATOMIC64_OP(xor, steor)
ATOMIC64_OP(add, stadd)
-static inline void __lse_atomic64_sub(s64 i, atomic64_t *v)
+static __always_inline void __lse_atomic64_sub(s64 i, atomic64_t *v)
{
__lse_atomic64_add(-i, v);
}
@@ -134,7 +141,8 @@ static inline void __lse_atomic64_sub(s64 i, atomic64_t *v)
#undef ATOMIC64_OP
#define ATOMIC64_FETCH_OP(name, mb, op, asm_op, cl...) \
-static inline long __lse_atomic64_fetch_##op##name(s64 i, atomic64_t *v)\
+static __always_inline long \
+__lse_atomic64_fetch_##op##name(s64 i, atomic64_t *v) \
{ \
s64 old; \
\
@@ -164,7 +172,8 @@ ATOMIC64_FETCH_OPS(add, ldadd)
#undef ATOMIC64_FETCH_OPS
#define ATOMIC64_FETCH_OP_SUB(name) \
-static inline long __lse_atomic64_fetch_sub##name(s64 i, atomic64_t *v) \
+static __always_inline long \
+__lse_atomic64_fetch_sub##name(s64 i, atomic64_t *v) \
{ \
return __lse_atomic64_fetch_add##name(-i, v); \
}
@@ -177,12 +186,14 @@ ATOMIC64_FETCH_OP_SUB( )
#undef ATOMIC64_FETCH_OP_SUB
#define ATOMIC64_OP_ADD_SUB_RETURN(name) \
-static inline long __lse_atomic64_add_return##name(s64 i, atomic64_t *v)\
+static __always_inline long \
+__lse_atomic64_add_return##name(s64 i, atomic64_t *v) \
{ \
return __lse_atomic64_fetch_add##name(i, v) + i; \
} \
\
-static inline long __lse_atomic64_sub_return##name(s64 i, atomic64_t *v)\
+static __always_inline long \
+__lse_atomic64_sub_return##name(s64 i, atomic64_t *v) \
{ \
return __lse_atomic64_fetch_sub##name(i, v) - i; \
}
@@ -194,13 +205,14 @@ ATOMIC64_OP_ADD_SUB_RETURN( )
#undef ATOMIC64_OP_ADD_SUB_RETURN
-static inline void __lse_atomic64_and(s64 i, atomic64_t *v)
+static __always_inline void __lse_atomic64_and(s64 i, atomic64_t *v)
{
return __lse_atomic64_andnot(~i, v);
}
#define ATOMIC64_FETCH_OP_AND(name, mb, cl...) \
-static inline long __lse_atomic64_fetch_and##name(s64 i, atomic64_t *v) \
+static __always_inline long \
+__lse_atomic64_fetch_and##name(s64 i, atomic64_t *v) \
{ \
return __lse_atomic64_fetch_andnot##name(~i, v); \
}
@@ -212,7 +224,7 @@ ATOMIC64_FETCH_OP_AND( , al, "memory")
#undef ATOMIC64_FETCH_OP_AND
-static inline s64 __lse_atomic64_dec_if_positive(atomic64_t *v)
+static __always_inline s64 __lse_atomic64_dec_if_positive(atomic64_t *v)
{
unsigned long tmp;
diff --git a/arch/arm64/include/asm/cache.h b/arch/arm64/include/asm/cache.h
index 34256bda0da9..c0b178d1bb4f 100644
--- a/arch/arm64/include/asm/cache.h
+++ b/arch/arm64/include/asm/cache.h
@@ -45,10 +45,6 @@ static inline unsigned int arch_slab_minalign(void)
#define arch_slab_minalign() arch_slab_minalign()
#endif
-#define CTR_CACHE_MINLINE_MASK \
- (0xf << CTR_EL0_DMINLINE_SHIFT | \
- CTR_EL0_IMINLINE_MASK << CTR_EL0_IMINLINE_SHIFT)
-
#define CTR_L1IP(ctr) SYS_FIELD_GET(CTR_EL0, L1Ip, ctr)
#define ICACHEF_ALIASING 0
diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h
index fd7d75a275f6..f73f11b55042 100644
--- a/arch/arm64/include/asm/cpufeature.h
+++ b/arch/arm64/include/asm/cpufeature.h
@@ -6,6 +6,7 @@
#ifndef __ASM_CPUFEATURE_H
#define __ASM_CPUFEATURE_H
+#include <asm/alternative-macros.h>
#include <asm/cpucaps.h>
#include <asm/cputype.h>
#include <asm/hwcap.h>
@@ -419,12 +420,8 @@ static __always_inline bool is_hyp_code(void)
}
extern DECLARE_BITMAP(cpu_hwcaps, ARM64_NCAPS);
-extern struct static_key_false cpu_hwcap_keys[ARM64_NCAPS];
-extern struct static_key_false arm64_const_caps_ready;
-/* ARM64 CAPS + alternative_cb */
-#define ARM64_NPATCHABLE (ARM64_NCAPS + 1)
-extern DECLARE_BITMAP(boot_capabilities, ARM64_NPATCHABLE);
+extern DECLARE_BITMAP(boot_capabilities, ARM64_NCAPS);
#define for_each_available_cap(cap) \
for_each_set_bit(cap, cpu_hwcaps, ARM64_NCAPS)
@@ -440,7 +437,7 @@ unsigned long cpu_get_elf_hwcap2(void);
static __always_inline bool system_capabilities_finalized(void)
{
- return static_branch_likely(&arm64_const_caps_ready);
+ return alternative_has_feature_likely(ARM64_ALWAYS_SYSTEM);
}
/*
@@ -448,11 +445,11 @@ static __always_inline bool system_capabilities_finalized(void)
*
* Before the capability is detected, this returns false.
*/
-static inline bool cpus_have_cap(unsigned int num)
+static __always_inline bool cpus_have_cap(unsigned int num)
{
if (num >= ARM64_NCAPS)
return false;
- return test_bit(num, cpu_hwcaps);
+ return arch_test_bit(num, cpu_hwcaps);
}
/*
@@ -467,7 +464,7 @@ static __always_inline bool __cpus_have_const_cap(int num)
{
if (num >= ARM64_NCAPS)
return false;
- return static_branch_unlikely(&cpu_hwcap_keys[num]);
+ return alternative_has_feature_unlikely(num);
}
/*
@@ -553,7 +550,7 @@ cpuid_feature_cap_perfmon_field(u64 features, int field, u64 cap)
u64 mask = GENMASK_ULL(field + 3, field);
/* Treat IMPLEMENTATION DEFINED functionality as unimplemented */
- if (val == ID_AA64DFR0_PMUVER_IMP_DEF)
+ if (val == ID_AA64DFR0_EL1_PMUVer_IMP_DEF)
val = 0;
if (val > cap) {
@@ -597,43 +594,43 @@ static inline s64 arm64_ftr_value(const struct arm64_ftr_bits *ftrp, u64 val)
static inline bool id_aa64mmfr0_mixed_endian_el0(u64 mmfr0)
{
- return cpuid_feature_extract_unsigned_field(mmfr0, ID_AA64MMFR0_BIGENDEL_SHIFT) == 0x1 ||
- cpuid_feature_extract_unsigned_field(mmfr0, ID_AA64MMFR0_BIGENDEL0_SHIFT) == 0x1;
+ return cpuid_feature_extract_unsigned_field(mmfr0, ID_AA64MMFR0_EL1_BIGEND_SHIFT) == 0x1 ||
+ cpuid_feature_extract_unsigned_field(mmfr0, ID_AA64MMFR0_EL1_BIGENDEL0_SHIFT) == 0x1;
}
static inline bool id_aa64pfr0_32bit_el1(u64 pfr0)
{
- u32 val = cpuid_feature_extract_unsigned_field(pfr0, ID_AA64PFR0_EL1_SHIFT);
+ u32 val = cpuid_feature_extract_unsigned_field(pfr0, ID_AA64PFR0_EL1_EL1_SHIFT);
- return val == ID_AA64PFR0_ELx_32BIT_64BIT;
+ return val == ID_AA64PFR0_EL1_ELx_32BIT_64BIT;
}
static inline bool id_aa64pfr0_32bit_el0(u64 pfr0)
{
- u32 val = cpuid_feature_extract_unsigned_field(pfr0, ID_AA64PFR0_EL0_SHIFT);
+ u32 val = cpuid_feature_extract_unsigned_field(pfr0, ID_AA64PFR0_EL1_EL0_SHIFT);
- return val == ID_AA64PFR0_ELx_32BIT_64BIT;
+ return val == ID_AA64PFR0_EL1_ELx_32BIT_64BIT;
}
static inline bool id_aa64pfr0_sve(u64 pfr0)
{
- u32 val = cpuid_feature_extract_unsigned_field(pfr0, ID_AA64PFR0_SVE_SHIFT);
+ u32 val = cpuid_feature_extract_unsigned_field(pfr0, ID_AA64PFR0_EL1_SVE_SHIFT);
return val > 0;
}
static inline bool id_aa64pfr1_sme(u64 pfr1)
{
- u32 val = cpuid_feature_extract_unsigned_field(pfr1, ID_AA64PFR1_SME_SHIFT);
+ u32 val = cpuid_feature_extract_unsigned_field(pfr1, ID_AA64PFR1_EL1_SME_SHIFT);
return val > 0;
}
static inline bool id_aa64pfr1_mte(u64 pfr1)
{
- u32 val = cpuid_feature_extract_unsigned_field(pfr1, ID_AA64PFR1_MTE_SHIFT);
+ u32 val = cpuid_feature_extract_unsigned_field(pfr1, ID_AA64PFR1_EL1_MTE_SHIFT);
- return val >= ID_AA64PFR1_MTE;
+ return val >= ID_AA64PFR1_EL1_MTE_MTE2;
}
void __init setup_cpu_features(void);
@@ -659,7 +656,7 @@ static inline bool supports_csv2p3(int scope)
pfr0 = read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1);
csv2_val = cpuid_feature_extract_unsigned_field(pfr0,
- ID_AA64PFR0_CSV2_SHIFT);
+ ID_AA64PFR0_EL1_CSV2_SHIFT);
return csv2_val == 3;
}
@@ -694,10 +691,10 @@ static inline bool system_supports_4kb_granule(void)
mmfr0 = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1);
val = cpuid_feature_extract_unsigned_field(mmfr0,
- ID_AA64MMFR0_TGRAN4_SHIFT);
+ ID_AA64MMFR0_EL1_TGRAN4_SHIFT);
- return (val >= ID_AA64MMFR0_TGRAN4_SUPPORTED_MIN) &&
- (val <= ID_AA64MMFR0_TGRAN4_SUPPORTED_MAX);
+ return (val >= ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED_MIN) &&
+ (val <= ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED_MAX);
}
static inline bool system_supports_64kb_granule(void)
@@ -707,10 +704,10 @@ static inline bool system_supports_64kb_granule(void)
mmfr0 = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1);
val = cpuid_feature_extract_unsigned_field(mmfr0,
- ID_AA64MMFR0_TGRAN64_SHIFT);
+ ID_AA64MMFR0_EL1_TGRAN64_SHIFT);
- return (val >= ID_AA64MMFR0_TGRAN64_SUPPORTED_MIN) &&
- (val <= ID_AA64MMFR0_TGRAN64_SUPPORTED_MAX);
+ return (val >= ID_AA64MMFR0_EL1_TGRAN64_SUPPORTED_MIN) &&
+ (val <= ID_AA64MMFR0_EL1_TGRAN64_SUPPORTED_MAX);
}
static inline bool system_supports_16kb_granule(void)
@@ -720,10 +717,10 @@ static inline bool system_supports_16kb_granule(void)
mmfr0 = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1);
val = cpuid_feature_extract_unsigned_field(mmfr0,
- ID_AA64MMFR0_TGRAN16_SHIFT);
+ ID_AA64MMFR0_EL1_TGRAN16_SHIFT);
- return (val >= ID_AA64MMFR0_TGRAN16_SUPPORTED_MIN) &&
- (val <= ID_AA64MMFR0_TGRAN16_SUPPORTED_MAX);
+ return (val >= ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED_MIN) &&
+ (val <= ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED_MAX);
}
static inline bool system_supports_mixed_endian_el0(void)
@@ -738,7 +735,7 @@ static inline bool system_supports_mixed_endian(void)
mmfr0 = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1);
val = cpuid_feature_extract_unsigned_field(mmfr0,
- ID_AA64MMFR0_BIGENDEL_SHIFT);
+ ID_AA64MMFR0_EL1_BIGEND_SHIFT);
return val == 0x1;
}
@@ -840,13 +837,13 @@ extern int do_emulate_mrs(struct pt_regs *regs, u32 sys_reg, u32 rt);
static inline u32 id_aa64mmfr0_parange_to_phys_shift(int parange)
{
switch (parange) {
- case ID_AA64MMFR0_PARANGE_32: return 32;
- case ID_AA64MMFR0_PARANGE_36: return 36;
- case ID_AA64MMFR0_PARANGE_40: return 40;
- case ID_AA64MMFR0_PARANGE_42: return 42;
- case ID_AA64MMFR0_PARANGE_44: return 44;
- case ID_AA64MMFR0_PARANGE_48: return 48;
- case ID_AA64MMFR0_PARANGE_52: return 52;
+ case ID_AA64MMFR0_EL1_PARANGE_32: return 32;
+ case ID_AA64MMFR0_EL1_PARANGE_36: return 36;
+ case ID_AA64MMFR0_EL1_PARANGE_40: return 40;
+ case ID_AA64MMFR0_EL1_PARANGE_42: return 42;
+ case ID_AA64MMFR0_EL1_PARANGE_44: return 44;
+ case ID_AA64MMFR0_EL1_PARANGE_48: return 48;
+ case ID_AA64MMFR0_EL1_PARANGE_52: return 52;
/*
* A future PE could use a value unknown to the kernel.
* However, by the "D10.1.4 Principles of the ID scheme
@@ -868,14 +865,14 @@ static inline bool cpu_has_hw_af(void)
mmfr1 = read_cpuid(ID_AA64MMFR1_EL1);
return cpuid_feature_extract_unsigned_field(mmfr1,
- ID_AA64MMFR1_HADBS_SHIFT);
+ ID_AA64MMFR1_EL1_HAFDBS_SHIFT);
}
static inline bool cpu_has_pan(void)
{
u64 mmfr1 = read_cpuid(ID_AA64MMFR1_EL1);
return cpuid_feature_extract_unsigned_field(mmfr1,
- ID_AA64MMFR1_PAN_SHIFT);
+ ID_AA64MMFR1_EL1_PAN_SHIFT);
}
#ifdef CONFIG_ARM64_AMU_EXTN
@@ -896,8 +893,8 @@ static inline unsigned int get_vmid_bits(u64 mmfr1)
int vmid_bits;
vmid_bits = cpuid_feature_extract_unsigned_field(mmfr1,
- ID_AA64MMFR1_VMIDBITS_SHIFT);
- if (vmid_bits == ID_AA64MMFR1_VMIDBITS_16)
+ ID_AA64MMFR1_EL1_VMIDBits_SHIFT);
+ if (vmid_bits == ID_AA64MMFR1_EL1_VMIDBits_16)
return 16;
/*
@@ -907,6 +904,8 @@ static inline unsigned int get_vmid_bits(u64 mmfr1)
return 8;
}
+struct arm64_ftr_reg *get_arm64_ftr_reg(u32 sys_id);
+
extern struct arm64_ftr_override id_aa64mmfr1_override;
extern struct arm64_ftr_override id_aa64pfr0_override;
extern struct arm64_ftr_override id_aa64pfr1_override;
diff --git a/arch/arm64/include/asm/el2_setup.h b/arch/arm64/include/asm/el2_setup.h
index 2630faa5bc08..668569adf4d3 100644
--- a/arch/arm64/include/asm/el2_setup.h
+++ b/arch/arm64/include/asm/el2_setup.h
@@ -40,7 +40,7 @@
.macro __init_el2_debug
mrs x1, id_aa64dfr0_el1
- sbfx x0, x1, #ID_AA64DFR0_PMUVER_SHIFT, #4
+ sbfx x0, x1, #ID_AA64DFR0_EL1_PMUVer_SHIFT, #4
cmp x0, #1
b.lt .Lskip_pmu_\@ // Skip if no PMU present
mrs x0, pmcr_el0 // Disable debug access traps
@@ -49,7 +49,7 @@
csel x2, xzr, x0, lt // all PMU counters from EL1
/* Statistical profiling */
- ubfx x0, x1, #ID_AA64DFR0_PMSVER_SHIFT, #4
+ ubfx x0, x1, #ID_AA64DFR0_EL1_PMSVer_SHIFT, #4
cbz x0, .Lskip_spe_\@ // Skip if SPE not present
mrs_s x0, SYS_PMBIDR_EL1 // If SPE available at EL2,
@@ -65,7 +65,7 @@
.Lskip_spe_\@:
/* Trace buffer */
- ubfx x0, x1, #ID_AA64DFR0_TRBE_SHIFT, #4
+ ubfx x0, x1, #ID_AA64DFR0_EL1_TraceBuffer_SHIFT, #4
cbz x0, .Lskip_trace_\@ // Skip if TraceBuffer is not present
mrs_s x0, SYS_TRBIDR_EL1
@@ -83,7 +83,7 @@
/* LORegions */
.macro __init_el2_lor
mrs x1, id_aa64mmfr1_el1
- ubfx x0, x1, #ID_AA64MMFR1_LOR_SHIFT, 4
+ ubfx x0, x1, #ID_AA64MMFR1_EL1_LO_SHIFT, 4
cbz x0, .Lskip_lor_\@
msr_s SYS_LORC_EL1, xzr
.Lskip_lor_\@:
@@ -97,7 +97,7 @@
/* GICv3 system register access */
.macro __init_el2_gicv3
mrs x0, id_aa64pfr0_el1
- ubfx x0, x0, #ID_AA64PFR0_GIC_SHIFT, #4
+ ubfx x0, x0, #ID_AA64PFR0_EL1_GIC_SHIFT, #4
cbz x0, .Lskip_gicv3_\@
mrs_s x0, SYS_ICC_SRE_EL2
@@ -132,12 +132,12 @@
/* Disable any fine grained traps */
.macro __init_el2_fgt
mrs x1, id_aa64mmfr0_el1
- ubfx x1, x1, #ID_AA64MMFR0_FGT_SHIFT, #4
+ ubfx x1, x1, #ID_AA64MMFR0_EL1_FGT_SHIFT, #4
cbz x1, .Lskip_fgt_\@
mov x0, xzr
mrs x1, id_aa64dfr0_el1
- ubfx x1, x1, #ID_AA64DFR0_PMSVER_SHIFT, #4
+ ubfx x1, x1, #ID_AA64DFR0_EL1_PMSVer_SHIFT, #4
cmp x1, #3
b.lt .Lset_debug_fgt_\@
/* Disable PMSNEVFR_EL1 read and write traps */
@@ -149,7 +149,7 @@
mov x0, xzr
mrs x1, id_aa64pfr1_el1
- ubfx x1, x1, #ID_AA64PFR1_SME_SHIFT, #4
+ ubfx x1, x1, #ID_AA64PFR1_EL1_SME_SHIFT, #4
cbz x1, .Lset_fgt_\@
/* Disable nVHE traps of TPIDR2 and SMPRI */
@@ -162,7 +162,7 @@
msr_s SYS_HFGITR_EL2, xzr
mrs x1, id_aa64pfr0_el1 // AMU traps UNDEF without AMU
- ubfx x1, x1, #ID_AA64PFR0_AMU_SHIFT, #4
+ ubfx x1, x1, #ID_AA64PFR0_EL1_AMU_SHIFT, #4
cbz x1, .Lskip_fgt_\@
msr_s SYS_HAFGRTR_EL2, xzr
diff --git a/arch/arm64/include/asm/exception.h b/arch/arm64/include/asm/exception.h
index d94aecff9690..19713d0f013b 100644
--- a/arch/arm64/include/asm/exception.h
+++ b/arch/arm64/include/asm/exception.h
@@ -58,8 +58,9 @@ asmlinkage void call_on_irq_stack(struct pt_regs *regs,
asmlinkage void asm_exit_to_user_mode(struct pt_regs *regs);
void do_mem_abort(unsigned long far, unsigned long esr, struct pt_regs *regs);
-void do_undefinstr(struct pt_regs *regs);
-void do_bti(struct pt_regs *regs);
+void do_undefinstr(struct pt_regs *regs, unsigned long esr);
+void do_el0_bti(struct pt_regs *regs);
+void do_el1_bti(struct pt_regs *regs, unsigned long esr);
void do_debug_exception(unsigned long addr_if_watchpoint, unsigned long esr,
struct pt_regs *regs);
void do_fpsimd_acc(unsigned long esr, struct pt_regs *regs);
@@ -70,9 +71,11 @@ void do_sysinstr(unsigned long esr, struct pt_regs *regs);
void do_sp_pc_abort(unsigned long addr, unsigned long esr, struct pt_regs *regs);
void bad_el0_sync(struct pt_regs *regs, int reason, unsigned long esr);
void do_cp15instr(unsigned long esr, struct pt_regs *regs);
+int do_compat_alignment_fixup(unsigned long addr, struct pt_regs *regs);
void do_el0_svc(struct pt_regs *regs);
void do_el0_svc_compat(struct pt_regs *regs);
-void do_ptrauth_fault(struct pt_regs *regs, unsigned long esr);
+void do_el0_fpac(struct pt_regs *regs, unsigned long esr);
+void do_el1_fpac(struct pt_regs *regs, unsigned long esr);
void do_serror(struct pt_regs *regs, unsigned long esr);
void do_notify_resume(struct pt_regs *regs, unsigned long thread_flags);
diff --git a/arch/arm64/include/asm/hw_breakpoint.h b/arch/arm64/include/asm/hw_breakpoint.h
index bc7aaed4b34e..fa4c6ff3aa9b 100644
--- a/arch/arm64/include/asm/hw_breakpoint.h
+++ b/arch/arm64/include/asm/hw_breakpoint.h
@@ -142,7 +142,7 @@ static inline int get_num_brps(void)
u64 dfr0 = read_sanitised_ftr_reg(SYS_ID_AA64DFR0_EL1);
return 1 +
cpuid_feature_extract_unsigned_field(dfr0,
- ID_AA64DFR0_BRPS_SHIFT);
+ ID_AA64DFR0_EL1_BRPs_SHIFT);
}
/* Determine number of WRP registers available. */
@@ -151,7 +151,7 @@ static inline int get_num_wrps(void)
u64 dfr0 = read_sanitised_ftr_reg(SYS_ID_AA64DFR0_EL1);
return 1 +
cpuid_feature_extract_unsigned_field(dfr0,
- ID_AA64DFR0_WRPS_SHIFT);
+ ID_AA64DFR0_EL1_WRPs_SHIFT);
}
#endif /* __ASM_BREAKPOINT_H */
diff --git a/arch/arm64/include/asm/hwcap.h b/arch/arm64/include/asm/hwcap.h
index cef4ae7a3d8b..298b386d3ebe 100644
--- a/arch/arm64/include/asm/hwcap.h
+++ b/arch/arm64/include/asm/hwcap.h
@@ -119,6 +119,7 @@
#define KERNEL_HWCAP_SME_FA64 __khwcap2_feature(SME_FA64)
#define KERNEL_HWCAP_WFXT __khwcap2_feature(WFXT)
#define KERNEL_HWCAP_EBF16 __khwcap2_feature(EBF16)
+#define KERNEL_HWCAP_SVE_EBF16 __khwcap2_feature(SVE_EBF16)
/*
* This yields a mask that user programs can use to figure out what
diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h
index b208da3bebec..7784081088e7 100644
--- a/arch/arm64/include/asm/kvm_mmu.h
+++ b/arch/arm64/include/asm/kvm_mmu.h
@@ -63,7 +63,7 @@
* specific registers encoded in the instructions).
*/
.macro kern_hyp_va reg
-alternative_cb kvm_update_va_mask
+alternative_cb ARM64_ALWAYS_SYSTEM, kvm_update_va_mask
and \reg, \reg, #1 /* mask with va_mask */
ror \reg, \reg, #1 /* rotate to the first tag bit */
add \reg, \reg, #0 /* insert the low 12 bits of the tag */
@@ -97,7 +97,7 @@ alternative_cb_end
hyp_pa \reg, \tmp
/* Load kimage_voffset. */
-alternative_cb kvm_get_kimage_voffset
+alternative_cb ARM64_ALWAYS_SYSTEM, kvm_get_kimage_voffset
movz \tmp, #0
movk \tmp, #0, lsl #16
movk \tmp, #0, lsl #32
@@ -131,6 +131,7 @@ static __always_inline unsigned long __kern_hyp_va(unsigned long v)
"add %0, %0, #0\n"
"add %0, %0, #0, lsl 12\n"
"ror %0, %0, #63\n",
+ ARM64_ALWAYS_SYSTEM,
kvm_update_va_mask)
: "+r" (v));
return v;
diff --git a/arch/arm64/include/asm/kvm_pgtable.h b/arch/arm64/include/asm/kvm_pgtable.h
index 9f339dffbc1a..1b098bd4cd37 100644
--- a/arch/arm64/include/asm/kvm_pgtable.h
+++ b/arch/arm64/include/asm/kvm_pgtable.h
@@ -16,9 +16,9 @@
static inline u64 kvm_get_parange(u64 mmfr0)
{
u64 parange = cpuid_feature_extract_unsigned_field(mmfr0,
- ID_AA64MMFR0_PARANGE_SHIFT);
- if (parange > ID_AA64MMFR0_PARANGE_MAX)
- parange = ID_AA64MMFR0_PARANGE_MAX;
+ ID_AA64MMFR0_EL1_PARANGE_SHIFT);
+ if (parange > ID_AA64MMFR0_EL1_PARANGE_MAX)
+ parange = ID_AA64MMFR0_EL1_PARANGE_MAX;
return parange;
}
diff --git a/arch/arm64/include/asm/lse.h b/arch/arm64/include/asm/lse.h
index 29c85810ae69..c503db8e73b0 100644
--- a/arch/arm64/include/asm/lse.h
+++ b/arch/arm64/include/asm/lse.h
@@ -13,14 +13,13 @@
#include <linux/jump_label.h>
#include <linux/stringify.h>
#include <asm/alternative.h>
+#include <asm/alternative-macros.h>
#include <asm/atomic_lse.h>
#include <asm/cpucaps.h>
-extern struct static_key_false cpu_hwcap_keys[ARM64_NCAPS];
-
static __always_inline bool system_uses_lse_atomics(void)
{
- return static_branch_likely(&cpu_hwcap_keys[ARM64_HAS_LSE_ATOMICS]);
+ return alternative_has_feature_likely(ARM64_HAS_LSE_ATOMICS);
}
#define __lse_ll_sc_body(op, ...) \
diff --git a/arch/arm64/include/asm/module.h b/arch/arm64/include/asm/module.h
index 4e7fa2623896..18734fed3bdd 100644
--- a/arch/arm64/include/asm/module.h
+++ b/arch/arm64/include/asm/module.h
@@ -58,11 +58,20 @@ static inline bool is_forbidden_offset_for_adrp(void *place)
}
struct plt_entry get_plt_entry(u64 dst, void *pc);
-bool plt_entries_equal(const struct plt_entry *a, const struct plt_entry *b);
-static inline bool plt_entry_is_initialized(const struct plt_entry *e)
+static inline const Elf_Shdr *find_section(const Elf_Ehdr *hdr,
+ const Elf_Shdr *sechdrs,
+ const char *name)
{
- return e->adrp || e->add || e->br;
+ const Elf_Shdr *s, *se;
+ const char *secstrs = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
+
+ for (s = sechdrs, se = sechdrs + hdr->e_shnum; s < se; s++) {
+ if (strcmp(name, secstrs + s->sh_name) == 0)
+ return s;
+ }
+
+ return NULL;
}
#endif /* __ASM_MODULE_H */
diff --git a/arch/arm64/include/asm/mte.h b/arch/arm64/include/asm/mte.h
index aa523591a44e..760c62f8e22f 100644
--- a/arch/arm64/include/asm/mte.h
+++ b/arch/arm64/include/asm/mte.h
@@ -42,7 +42,9 @@ void mte_sync_tags(pte_t old_pte, pte_t pte);
void mte_copy_page_tags(void *kto, const void *kfrom);
void mte_thread_init_user(void);
void mte_thread_switch(struct task_struct *next);
+void mte_cpu_setup(void);
void mte_suspend_enter(void);
+void mte_suspend_exit(void);
long set_mte_ctrl(struct task_struct *task, unsigned long arg);
long get_mte_ctrl(struct task_struct *task);
int mte_ptrace_copy_tags(struct task_struct *child, long request,
@@ -72,6 +74,9 @@ static inline void mte_thread_switch(struct task_struct *next)
static inline void mte_suspend_enter(void)
{
}
+static inline void mte_suspend_exit(void)
+{
+}
static inline long set_mte_ctrl(struct task_struct *task, unsigned long arg)
{
return 0;
diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h
index 86eb0bfe3b38..61883518fc50 100644
--- a/arch/arm64/include/asm/processor.h
+++ b/arch/arm64/include/asm/processor.h
@@ -410,7 +410,7 @@ long get_tagged_addr_ctrl(struct task_struct *task);
* The top of the current task's task stack
*/
#define current_top_of_stack() ((unsigned long)current->stack + THREAD_SIZE)
-#define on_thread_stack() (on_task_stack(current, current_stack_pointer, 1, NULL))
+#define on_thread_stack() (on_task_stack(current, current_stack_pointer, 1))
#endif /* __ASSEMBLY__ */
#endif /* __ASM_PROCESSOR_H */
diff --git a/arch/arm64/include/asm/sdei.h b/arch/arm64/include/asm/sdei.h
index 7bea1d705dd6..4292d9bafb9d 100644
--- a/arch/arm64/include/asm/sdei.h
+++ b/arch/arm64/include/asm/sdei.h
@@ -43,22 +43,5 @@ unsigned long do_sdei_event(struct pt_regs *regs,
unsigned long sdei_arch_get_entry_point(int conduit);
#define sdei_arch_get_entry_point(x) sdei_arch_get_entry_point(x)
-struct stack_info;
-
-bool _on_sdei_stack(unsigned long sp, unsigned long size,
- struct stack_info *info);
-static inline bool on_sdei_stack(unsigned long sp, unsigned long size,
- struct stack_info *info)
-{
- if (!IS_ENABLED(CONFIG_VMAP_STACK))
- return false;
- if (!IS_ENABLED(CONFIG_ARM_SDE_INTERFACE))
- return false;
- if (in_nmi())
- return _on_sdei_stack(sp, size, info);
-
- return false;
-}
-
#endif /* __ASSEMBLY__ */
#endif /* __ASM_SDEI_H */
diff --git a/arch/arm64/include/asm/stacktrace.h b/arch/arm64/include/asm/stacktrace.h
index 6ebdcdff77f5..5a0edb064ea4 100644
--- a/arch/arm64/include/asm/stacktrace.h
+++ b/arch/arm64/include/asm/stacktrace.h
@@ -22,39 +22,86 @@ extern void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk,
DECLARE_PER_CPU(unsigned long *, irq_stack_ptr);
-static inline bool on_irq_stack(unsigned long sp, unsigned long size,
- struct stack_info *info)
+static inline struct stack_info stackinfo_get_irq(void)
{
unsigned long low = (unsigned long)raw_cpu_read(irq_stack_ptr);
unsigned long high = low + IRQ_STACK_SIZE;
- return on_stack(sp, size, low, high, STACK_TYPE_IRQ, info);
+ return (struct stack_info) {
+ .low = low,
+ .high = high,
+ };
}
-static inline bool on_task_stack(const struct task_struct *tsk,
- unsigned long sp, unsigned long size,
- struct stack_info *info)
+static inline bool on_irq_stack(unsigned long sp, unsigned long size)
+{
+ struct stack_info info = stackinfo_get_irq();
+ return stackinfo_on_stack(&info, sp, size);
+}
+
+static inline struct stack_info stackinfo_get_task(const struct task_struct *tsk)
{
unsigned long low = (unsigned long)task_stack_page(tsk);
unsigned long high = low + THREAD_SIZE;
- return on_stack(sp, size, low, high, STACK_TYPE_TASK, info);
+ return (struct stack_info) {
+ .low = low,
+ .high = high,
+ };
+}
+
+static inline bool on_task_stack(const struct task_struct *tsk,
+ unsigned long sp, unsigned long size)
+{
+ struct stack_info info = stackinfo_get_task(tsk);
+ return stackinfo_on_stack(&info, sp, size);
}
#ifdef CONFIG_VMAP_STACK
DECLARE_PER_CPU(unsigned long [OVERFLOW_STACK_SIZE/sizeof(long)], overflow_stack);
-static inline bool on_overflow_stack(unsigned long sp, unsigned long size,
- struct stack_info *info)
+static inline struct stack_info stackinfo_get_overflow(void)
{
unsigned long low = (unsigned long)raw_cpu_ptr(overflow_stack);
unsigned long high = low + OVERFLOW_STACK_SIZE;
- return on_stack(sp, size, low, high, STACK_TYPE_OVERFLOW, info);
+ return (struct stack_info) {
+ .low = low,
+ .high = high,
+ };
+}
+#else
+#define stackinfo_get_overflow() stackinfo_get_unknown()
+#endif
+
+#if defined(CONFIG_ARM_SDE_INTERFACE) && defined(CONFIG_VMAP_STACK)
+DECLARE_PER_CPU(unsigned long *, sdei_stack_normal_ptr);
+DECLARE_PER_CPU(unsigned long *, sdei_stack_critical_ptr);
+
+static inline struct stack_info stackinfo_get_sdei_normal(void)
+{
+ unsigned long low = (unsigned long)raw_cpu_read(sdei_stack_normal_ptr);
+ unsigned long high = low + SDEI_STACK_SIZE;
+
+ return (struct stack_info) {
+ .low = low,
+ .high = high,
+ };
+}
+
+static inline struct stack_info stackinfo_get_sdei_critical(void)
+{
+ unsigned long low = (unsigned long)raw_cpu_read(sdei_stack_critical_ptr);
+ unsigned long high = low + SDEI_STACK_SIZE;
+
+ return (struct stack_info) {
+ .low = low,
+ .high = high,
+ };
}
#else
-static inline bool on_overflow_stack(unsigned long sp, unsigned long size,
- struct stack_info *info) { return false; }
+#define stackinfo_get_sdei_normal() stackinfo_get_unknown()
+#define stackinfo_get_sdei_critical() stackinfo_get_unknown()
#endif
#endif /* __ASM_STACKTRACE_H */
diff --git a/arch/arm64/include/asm/stacktrace/common.h b/arch/arm64/include/asm/stacktrace/common.h
index f58eb944c46f..508f734de46e 100644
--- a/arch/arm64/include/asm/stacktrace/common.h
+++ b/arch/arm64/include/asm/stacktrace/common.h
@@ -2,13 +2,6 @@
/*
* Common arm64 stack unwinder code.
*
- * To implement a new arm64 stack unwinder:
- * 1) Include this header
- *
- * 2) Call into unwind_next_common() from your top level unwind
- * function, passing it the validation and translation callbacks
- * (though the later can be NULL if no translation is required).
- *
* See: arch/arm64/kernel/stacktrace.c for the reference implementation.
*
* Copyright (C) 2012 ARM Ltd.
@@ -16,78 +9,60 @@
#ifndef __ASM_STACKTRACE_COMMON_H
#define __ASM_STACKTRACE_COMMON_H
-#include <linux/bitmap.h>
-#include <linux/bitops.h>
#include <linux/kprobes.h>
#include <linux/types.h>
-enum stack_type {
- STACK_TYPE_UNKNOWN,
- STACK_TYPE_TASK,
- STACK_TYPE_IRQ,
- STACK_TYPE_OVERFLOW,
- STACK_TYPE_SDEI_NORMAL,
- STACK_TYPE_SDEI_CRITICAL,
- STACK_TYPE_HYP,
- __NR_STACK_TYPES
-};
-
struct stack_info {
unsigned long low;
unsigned long high;
- enum stack_type type;
};
-/*
- * A snapshot of a frame record or fp/lr register values, along with some
- * accounting information necessary for robust unwinding.
+/**
+ * struct unwind_state - state used for robust unwinding.
*
* @fp: The fp value in the frame record (or the real fp)
* @pc: The lr value in the frame record (or the real lr)
*
- * @stacks_done: Stacks which have been entirely unwound, for which it is no
- * longer valid to unwind to.
- *
- * @prev_fp: The fp that pointed to this frame record, or a synthetic value
- * of 0. This is used to ensure that within a stack, each
- * subsequent frame record is at an increasing address.
- * @prev_type: The type of stack this frame record was on, or a synthetic
- * value of STACK_TYPE_UNKNOWN. This is used to detect a
- * transition from one stack to another.
- *
* @kr_cur: When KRETPROBES is selected, holds the kretprobe instance
* associated with the most recently encountered replacement lr
* value.
*
* @task: The task being unwound.
+ *
+ * @stack: The stack currently being unwound.
+ * @stacks: An array of stacks which can be unwound.
+ * @nr_stacks: The number of stacks in @stacks.
*/
struct unwind_state {
unsigned long fp;
unsigned long pc;
- DECLARE_BITMAP(stacks_done, __NR_STACK_TYPES);
- unsigned long prev_fp;
- enum stack_type prev_type;
#ifdef CONFIG_KRETPROBES
struct llist_node *kr_cur;
#endif
struct task_struct *task;
+
+ struct stack_info stack;
+ struct stack_info *stacks;
+ int nr_stacks;
};
-static inline bool on_stack(unsigned long sp, unsigned long size,
- unsigned long low, unsigned long high,
- enum stack_type type, struct stack_info *info)
+static inline struct stack_info stackinfo_get_unknown(void)
+{
+ return (struct stack_info) {
+ .low = 0,
+ .high = 0,
+ };
+}
+
+static inline bool stackinfo_on_stack(const struct stack_info *info,
+ unsigned long sp, unsigned long size)
{
- if (!low)
+ if (!info->low)
return false;
- if (sp < low || sp + size < sp || sp + size > high)
+ if (sp < info->low || sp + size < sp || sp + size > info->high)
return false;
- if (info) {
- info->low = low;
- info->high = high;
- info->type = type;
- }
return true;
}
@@ -99,99 +74,101 @@ static inline void unwind_init_common(struct unwind_state *state,
state->kr_cur = NULL;
#endif
- /*
- * Prime the first unwind.
- *
- * In unwind_next() we'll check that the FP points to a valid stack,
- * which can't be STACK_TYPE_UNKNOWN, and the first unwind will be
- * treated as a transition to whichever stack that happens to be. The
- * prev_fp value won't be used, but we set it to 0 such that it is
- * definitely not an accessible stack address.
- */
- bitmap_zero(state->stacks_done, __NR_STACK_TYPES);
- state->prev_fp = 0;
- state->prev_type = STACK_TYPE_UNKNOWN;
+ state->stack = stackinfo_get_unknown();
}
-/*
- * stack_trace_translate_fp_fn() - Translates a non-kernel frame pointer to
- * a kernel address.
- *
- * @fp: the frame pointer to be updated to its kernel address.
- * @type: the stack type associated with frame pointer @fp
- *
- * Returns true and success and @fp is updated to the corresponding
- * kernel virtual address; otherwise returns false.
- */
-typedef bool (*stack_trace_translate_fp_fn)(unsigned long *fp,
- enum stack_type type);
+static struct stack_info *unwind_find_next_stack(const struct unwind_state *state,
+ unsigned long sp,
+ unsigned long size)
+{
+ for (int i = 0; i < state->nr_stacks; i++) {
+ struct stack_info *info = &state->stacks[i];
-/*
- * on_accessible_stack_fn() - Check whether a stack range is on any
- * of the possible stacks.
+ if (stackinfo_on_stack(info, sp, size))
+ return info;
+ }
+
+ return NULL;
+}
+
+/**
+ * unwind_consume_stack() - Check if an object is on an accessible stack,
+ * updating stack boundaries so that future unwind steps cannot consume this
+ * object again.
*
- * @tsk: task whose stack is being unwound
- * @sp: stack address being checked
- * @size: size of the stack range being checked
- * @info: stack unwinding context
+ * @state: the current unwind state.
+ * @sp: the base address of the object.
+ * @size: the size of the object.
+ *
+ * Return: 0 upon success, an error code otherwise.
*/
-typedef bool (*on_accessible_stack_fn)(const struct task_struct *tsk,
- unsigned long sp, unsigned long size,
- struct stack_info *info);
-
-static inline int unwind_next_common(struct unwind_state *state,
- struct stack_info *info,
- on_accessible_stack_fn accessible,
- stack_trace_translate_fp_fn translate_fp)
+static inline int unwind_consume_stack(struct unwind_state *state,
+ unsigned long sp,
+ unsigned long size)
{
- unsigned long fp = state->fp, kern_fp = fp;
- struct task_struct *tsk = state->task;
+ struct stack_info *next;
- if (fp & 0x7)
- return -EINVAL;
+ if (stackinfo_on_stack(&state->stack, sp, size))
+ goto found;
- if (!accessible(tsk, fp, 16, info))
- return -EINVAL;
-
- if (test_bit(info->type, state->stacks_done))
+ next = unwind_find_next_stack(state, sp, size);
+ if (!next)
return -EINVAL;
/*
- * If fp is not from the current address space perform the necessary
- * translation before dereferencing it to get the next fp.
- */
- if (translate_fp && !translate_fp(&kern_fp, info->type))
- return -EINVAL;
-
- /*
- * As stacks grow downward, any valid record on the same stack must be
- * at a strictly higher address than the prior record.
+ * Stack transitions are strictly one-way, and once we've
+ * transitioned from one stack to another, it's never valid to
+ * unwind back to the old stack.
+ *
+ * Remove the current stack from the list of stacks so that it cannot
+ * be found on a subsequent transition.
*
- * Stacks can nest in several valid orders, e.g.
+ * Note that stacks can nest in several valid orders, e.g.
*
- * TASK -> IRQ -> OVERFLOW -> SDEI_NORMAL
- * TASK -> SDEI_NORMAL -> SDEI_CRITICAL -> OVERFLOW
- * HYP -> OVERFLOW
+ * TASK -> IRQ -> OVERFLOW -> SDEI_NORMAL
+ * TASK -> SDEI_NORMAL -> SDEI_CRITICAL -> OVERFLOW
+ * HYP -> OVERFLOW
*
- * ... but the nesting itself is strict. Once we transition from one
- * stack to another, it's never valid to unwind back to that first
- * stack.
+ * ... so we do not check the specific order of stack
+ * transitions.
*/
- if (info->type == state->prev_type) {
- if (fp <= state->prev_fp)
- return -EINVAL;
- } else {
- __set_bit(state->prev_type, state->stacks_done);
- }
+ state->stack = *next;
+ *next = stackinfo_get_unknown();
+
+found:
+ /*
+ * Future unwind steps can only consume stack above this frame record.
+ * Update the current stack to start immediately above it.
+ */
+ state->stack.low = sp + size;
+ return 0;
+}
+
+/**
+ * unwind_next_frame_record() - Unwind to the next frame record.
+ *
+ * @state: the current unwind state.
+ *
+ * Return: 0 upon success, an error code otherwise.
+ */
+static inline int
+unwind_next_frame_record(struct unwind_state *state)
+{
+ unsigned long fp = state->fp;
+ int err;
+
+ if (fp & 0x7)
+ return -EINVAL;
+
+ err = unwind_consume_stack(state, fp, 16);
+ if (err)
+ return err;
/*
- * Record this frame record's values and location. The prev_fp and
- * prev_type are only meaningful to the next unwind_next() invocation.
+ * Record this frame record's values.
*/
- state->fp = READ_ONCE(*(unsigned long *)(kern_fp));
- state->pc = READ_ONCE(*(unsigned long *)(kern_fp + 8));
- state->prev_fp = fp;
- state->prev_type = info->type;
+ state->fp = READ_ONCE(*(unsigned long *)(fp));
+ state->pc = READ_ONCE(*(unsigned long *)(fp + 8));
return 0;
}
diff --git a/arch/arm64/include/asm/stacktrace/nvhe.h b/arch/arm64/include/asm/stacktrace/nvhe.h
index d5527b600390..25ab83a315a7 100644
--- a/arch/arm64/include/asm/stacktrace/nvhe.h
+++ b/arch/arm64/include/asm/stacktrace/nvhe.h
@@ -20,8 +20,8 @@
#include <asm/stacktrace/common.h>
-/*
- * kvm_nvhe_unwind_init - Start an unwind from the given nVHE HYP fp and pc
+/**
+ * kvm_nvhe_unwind_init() - Start an unwind from the given nVHE HYP fp and pc
*
* @state : unwind_state to initialize
* @fp : frame pointer at which to start the unwinding.
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index 818df938a7ad..debc1c0b2b7f 100644
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -190,19 +190,6 @@
#define SYS_MVFR1_EL1 sys_reg(3, 0, 0, 3, 1)
#define SYS_MVFR2_EL1 sys_reg(3, 0, 0, 3, 2)
-#define SYS_ID_AA64PFR0_EL1 sys_reg(3, 0, 0, 4, 0)
-#define SYS_ID_AA64PFR1_EL1 sys_reg(3, 0, 0, 4, 1)
-
-#define SYS_ID_AA64DFR0_EL1 sys_reg(3, 0, 0, 5, 0)
-#define SYS_ID_AA64DFR1_EL1 sys_reg(3, 0, 0, 5, 1)
-
-#define SYS_ID_AA64AFR0_EL1 sys_reg(3, 0, 0, 5, 4)
-#define SYS_ID_AA64AFR1_EL1 sys_reg(3, 0, 0, 5, 5)
-
-#define SYS_ID_AA64MMFR0_EL1 sys_reg(3, 0, 0, 7, 0)
-#define SYS_ID_AA64MMFR1_EL1 sys_reg(3, 0, 0, 7, 1)
-#define SYS_ID_AA64MMFR2_EL1 sys_reg(3, 0, 0, 7, 2)
-
#define SYS_ACTLR_EL1 sys_reg(3, 0, 1, 0, 1)
#define SYS_RGSR_EL1 sys_reg(3, 0, 1, 0, 5)
#define SYS_GCR_EL1 sys_reg(3, 0, 1, 0, 6)
@@ -436,19 +423,11 @@
#define SYS_ICC_IGRPEN0_EL1 sys_reg(3, 0, 12, 12, 6)
#define SYS_ICC_IGRPEN1_EL1 sys_reg(3, 0, 12, 12, 7)
-#define SYS_TPIDR_EL1 sys_reg(3, 0, 13, 0, 4)
-
-#define SYS_SCXTNUM_EL1 sys_reg(3, 0, 13, 0, 7)
-
#define SYS_CNTKCTL_EL1 sys_reg(3, 0, 14, 1, 0)
#define SYS_CCSIDR_EL1 sys_reg(3, 1, 0, 0, 0)
#define SYS_AIDR_EL1 sys_reg(3, 1, 0, 0, 7)
-#define SMIDR_EL1_IMPLEMENTER_SHIFT 24
-#define SMIDR_EL1_SMPS_SHIFT 15
-#define SMIDR_EL1_AFFINITY_SHIFT 0
-
#define SYS_RNDR_EL0 sys_reg(3, 3, 2, 4, 0)
#define SYS_RNDRRS_EL0 sys_reg(3, 3, 2, 4, 1)
@@ -537,7 +516,6 @@
#define SYS_HFGWTR_EL2 sys_reg(3, 4, 1, 1, 5)
#define SYS_HFGITR_EL2 sys_reg(3, 4, 1, 1, 6)
#define SYS_TRFCR_EL2 sys_reg(3, 4, 1, 2, 1)
-#define SYS_HCRX_EL2 sys_reg(3, 4, 1, 2, 2)
#define SYS_HDFGRTR_EL2 sys_reg(3, 4, 3, 1, 4)
#define SYS_HDFGWTR_EL2 sys_reg(3, 4, 3, 1, 5)
#define SYS_HAFGRTR_EL2 sys_reg(3, 4, 3, 1, 6)
@@ -690,164 +668,30 @@
#define MAIR_ATTRIDX(attr, idx) ((attr) << ((idx) * 8))
/* id_aa64pfr0 */
-#define ID_AA64PFR0_CSV3_SHIFT 60
-#define ID_AA64PFR0_CSV2_SHIFT 56
-#define ID_AA64PFR0_DIT_SHIFT 48
-#define ID_AA64PFR0_AMU_SHIFT 44
-#define ID_AA64PFR0_MPAM_SHIFT 40
-#define ID_AA64PFR0_SEL2_SHIFT 36
-#define ID_AA64PFR0_SVE_SHIFT 32
-#define ID_AA64PFR0_RAS_SHIFT 28
-#define ID_AA64PFR0_GIC_SHIFT 24
-#define ID_AA64PFR0_ASIMD_SHIFT 20
-#define ID_AA64PFR0_FP_SHIFT 16
-#define ID_AA64PFR0_EL3_SHIFT 12
-#define ID_AA64PFR0_EL2_SHIFT 8
-#define ID_AA64PFR0_EL1_SHIFT 4
-#define ID_AA64PFR0_EL0_SHIFT 0
-
-#define ID_AA64PFR0_AMU 0x1
-#define ID_AA64PFR0_SVE 0x1
-#define ID_AA64PFR0_RAS_V1 0x1
-#define ID_AA64PFR0_RAS_V1P1 0x2
-#define ID_AA64PFR0_FP_NI 0xf
-#define ID_AA64PFR0_FP_SUPPORTED 0x0
-#define ID_AA64PFR0_ASIMD_NI 0xf
-#define ID_AA64PFR0_ASIMD_SUPPORTED 0x0
-#define ID_AA64PFR0_ELx_64BIT_ONLY 0x1
-#define ID_AA64PFR0_ELx_32BIT_64BIT 0x2
-
-/* id_aa64pfr1 */
-#define ID_AA64PFR1_SME_SHIFT 24
-#define ID_AA64PFR1_MPAMFRAC_SHIFT 16
-#define ID_AA64PFR1_RASFRAC_SHIFT 12
-#define ID_AA64PFR1_MTE_SHIFT 8
-#define ID_AA64PFR1_SSBS_SHIFT 4
-#define ID_AA64PFR1_BT_SHIFT 0
-
-#define ID_AA64PFR1_SSBS_PSTATE_NI 0
-#define ID_AA64PFR1_SSBS_PSTATE_ONLY 1
-#define ID_AA64PFR1_SSBS_PSTATE_INSNS 2
-#define ID_AA64PFR1_BT_BTI 0x1
-#define ID_AA64PFR1_SME 1
-
-#define ID_AA64PFR1_MTE_NI 0x0
-#define ID_AA64PFR1_MTE_EL0 0x1
-#define ID_AA64PFR1_MTE 0x2
-#define ID_AA64PFR1_MTE_ASYMM 0x3
+#define ID_AA64PFR0_EL1_ELx_64BIT_ONLY 0x1
+#define ID_AA64PFR0_EL1_ELx_32BIT_64BIT 0x2
/* id_aa64mmfr0 */
-#define ID_AA64MMFR0_ECV_SHIFT 60
-#define ID_AA64MMFR0_FGT_SHIFT 56
-#define ID_AA64MMFR0_EXS_SHIFT 44
-#define ID_AA64MMFR0_TGRAN4_2_SHIFT 40
-#define ID_AA64MMFR0_TGRAN64_2_SHIFT 36
-#define ID_AA64MMFR0_TGRAN16_2_SHIFT 32
-#define ID_AA64MMFR0_TGRAN4_SHIFT 28
-#define ID_AA64MMFR0_TGRAN64_SHIFT 24
-#define ID_AA64MMFR0_TGRAN16_SHIFT 20
-#define ID_AA64MMFR0_BIGENDEL0_SHIFT 16
-#define ID_AA64MMFR0_SNSMEM_SHIFT 12
-#define ID_AA64MMFR0_BIGENDEL_SHIFT 8
-#define ID_AA64MMFR0_ASID_SHIFT 4
-#define ID_AA64MMFR0_PARANGE_SHIFT 0
-
-#define ID_AA64MMFR0_ASID_8 0x0
-#define ID_AA64MMFR0_ASID_16 0x2
-
-#define ID_AA64MMFR0_TGRAN4_NI 0xf
-#define ID_AA64MMFR0_TGRAN4_SUPPORTED_MIN 0x0
-#define ID_AA64MMFR0_TGRAN4_SUPPORTED_MAX 0x7
-#define ID_AA64MMFR0_TGRAN64_NI 0xf
-#define ID_AA64MMFR0_TGRAN64_SUPPORTED_MIN 0x0
-#define ID_AA64MMFR0_TGRAN64_SUPPORTED_MAX 0x7
-#define ID_AA64MMFR0_TGRAN16_NI 0x0
-#define ID_AA64MMFR0_TGRAN16_SUPPORTED_MIN 0x1
-#define ID_AA64MMFR0_TGRAN16_SUPPORTED_MAX 0xf
-
-#define ID_AA64MMFR0_PARANGE_32 0x0
-#define ID_AA64MMFR0_PARANGE_36 0x1
-#define ID_AA64MMFR0_PARANGE_40 0x2
-#define ID_AA64MMFR0_PARANGE_42 0x3
-#define ID_AA64MMFR0_PARANGE_44 0x4
-#define ID_AA64MMFR0_PARANGE_48 0x5
-#define ID_AA64MMFR0_PARANGE_52 0x6
+#define ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED_MIN 0x0
+#define ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED_MAX 0x7
+#define ID_AA64MMFR0_EL1_TGRAN64_SUPPORTED_MIN 0x0
+#define ID_AA64MMFR0_EL1_TGRAN64_SUPPORTED_MAX 0x7
+#define ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED_MIN 0x1
+#define ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED_MAX 0xf
#define ARM64_MIN_PARANGE_BITS 32
-#define ID_AA64MMFR0_TGRAN_2_SUPPORTED_DEFAULT 0x0
-#define ID_AA64MMFR0_TGRAN_2_SUPPORTED_NONE 0x1
-#define ID_AA64MMFR0_TGRAN_2_SUPPORTED_MIN 0x2
-#define ID_AA64MMFR0_TGRAN_2_SUPPORTED_MAX 0x7
+#define ID_AA64MMFR0_EL1_TGRAN_2_SUPPORTED_DEFAULT 0x0
+#define ID_AA64MMFR0_EL1_TGRAN_2_SUPPORTED_NONE 0x1
+#define ID_AA64MMFR0_EL1_TGRAN_2_SUPPORTED_MIN 0x2
+#define ID_AA64MMFR0_EL1_TGRAN_2_SUPPORTED_MAX 0x7
#ifdef CONFIG_ARM64_PA_BITS_52
-#define ID_AA64MMFR0_PARANGE_MAX ID_AA64MMFR0_PARANGE_52
+#define ID_AA64MMFR0_EL1_PARANGE_MAX ID_AA64MMFR0_EL1_PARANGE_52
#else
-#define ID_AA64MMFR0_PARANGE_MAX ID_AA64MMFR0_PARANGE_48
+#define ID_AA64MMFR0_EL1_PARANGE_MAX ID_AA64MMFR0_EL1_PARANGE_48
#endif
-/* id_aa64mmfr1 */
-#define ID_AA64MMFR1_ECBHB_SHIFT 60
-#define ID_AA64MMFR1_TIDCP1_SHIFT 52
-#define ID_AA64MMFR1_HCX_SHIFT 40
-#define ID_AA64MMFR1_AFP_SHIFT 44
-#define ID_AA64MMFR1_ETS_SHIFT 36
-#define ID_AA64MMFR1_TWED_SHIFT 32
-#define ID_AA64MMFR1_XNX_SHIFT 28
-#define ID_AA64MMFR1_SPECSEI_SHIFT 24
-#define ID_AA64MMFR1_PAN_SHIFT 20
-#define ID_AA64MMFR1_LOR_SHIFT 16
-#define ID_AA64MMFR1_HPD_SHIFT 12
-#define ID_AA64MMFR1_VHE_SHIFT 8
-#define ID_AA64MMFR1_VMIDBITS_SHIFT 4
-#define ID_AA64MMFR1_HADBS_SHIFT 0
-
-#define ID_AA64MMFR1_VMIDBITS_8 0
-#define ID_AA64MMFR1_VMIDBITS_16 2
-
-#define ID_AA64MMFR1_TIDCP1_NI 0
-#define ID_AA64MMFR1_TIDCP1_IMP 1
-
-/* id_aa64mmfr2 */
-#define ID_AA64MMFR2_E0PD_SHIFT 60
-#define ID_AA64MMFR2_EVT_SHIFT 56
-#define ID_AA64MMFR2_BBM_SHIFT 52
-#define ID_AA64MMFR2_TTL_SHIFT 48
-#define ID_AA64MMFR2_FWB_SHIFT 40
-#define ID_AA64MMFR2_IDS_SHIFT 36
-#define ID_AA64MMFR2_AT_SHIFT 32
-#define ID_AA64MMFR2_ST_SHIFT 28
-#define ID_AA64MMFR2_NV_SHIFT 24
-#define ID_AA64MMFR2_CCIDX_SHIFT 20
-#define ID_AA64MMFR2_LVA_SHIFT 16
-#define ID_AA64MMFR2_IESB_SHIFT 12
-#define ID_AA64MMFR2_LSM_SHIFT 8
-#define ID_AA64MMFR2_UAO_SHIFT 4
-#define ID_AA64MMFR2_CNP_SHIFT 0
-
-/* id_aa64dfr0 */
-#define ID_AA64DFR0_MTPMU_SHIFT 48
-#define ID_AA64DFR0_TRBE_SHIFT 44
-#define ID_AA64DFR0_TRACE_FILT_SHIFT 40
-#define ID_AA64DFR0_DOUBLELOCK_SHIFT 36
-#define ID_AA64DFR0_PMSVER_SHIFT 32
-#define ID_AA64DFR0_CTX_CMPS_SHIFT 28
-#define ID_AA64DFR0_WRPS_SHIFT 20
-#define ID_AA64DFR0_BRPS_SHIFT 12
-#define ID_AA64DFR0_PMUVER_SHIFT 8
-#define ID_AA64DFR0_TRACEVER_SHIFT 4
-#define ID_AA64DFR0_DEBUGVER_SHIFT 0
-
-#define ID_AA64DFR0_PMUVER_8_0 0x1
-#define ID_AA64DFR0_PMUVER_8_1 0x4
-#define ID_AA64DFR0_PMUVER_8_4 0x5
-#define ID_AA64DFR0_PMUVER_8_5 0x6
-#define ID_AA64DFR0_PMUVER_8_7 0x7
-#define ID_AA64DFR0_PMUVER_IMP_DEF 0xf
-
-#define ID_AA64DFR0_PMSVER_8_2 0x1
-#define ID_AA64DFR0_PMSVER_8_3 0x2
-
#define ID_DFR0_PERFMON_SHIFT 24
#define ID_DFR0_PERFMON_8_0 0x3
@@ -955,20 +799,20 @@
#define ID_PFR1_PROGMOD_SHIFT 0
#if defined(CONFIG_ARM64_4K_PAGES)
-#define ID_AA64MMFR0_TGRAN_SHIFT ID_AA64MMFR0_TGRAN4_SHIFT
-#define ID_AA64MMFR0_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_TGRAN4_SUPPORTED_MIN
-#define ID_AA64MMFR0_TGRAN_SUPPORTED_MAX ID_AA64MMFR0_TGRAN4_SUPPORTED_MAX
-#define ID_AA64MMFR0_TGRAN_2_SHIFT ID_AA64MMFR0_TGRAN4_2_SHIFT
+#define ID_AA64MMFR0_EL1_TGRAN_SHIFT ID_AA64MMFR0_EL1_TGRAN4_SHIFT
+#define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED_MIN
+#define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MAX ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED_MAX
+#define ID_AA64MMFR0_EL1_TGRAN_2_SHIFT ID_AA64MMFR0_EL1_TGRAN4_2_SHIFT
#elif defined(CONFIG_ARM64_16K_PAGES)
-#define ID_AA64MMFR0_TGRAN_SHIFT ID_AA64MMFR0_TGRAN16_SHIFT
-#define ID_AA64MMFR0_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_TGRAN16_SUPPORTED_MIN
-#define ID_AA64MMFR0_TGRAN_SUPPORTED_MAX ID_AA64MMFR0_TGRAN16_SUPPORTED_MAX
-#define ID_AA64MMFR0_TGRAN_2_SHIFT ID_AA64MMFR0_TGRAN16_2_SHIFT
+#define ID_AA64MMFR0_EL1_TGRAN_SHIFT ID_AA64MMFR0_EL1_TGRAN16_SHIFT
+#define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED_MIN
+#define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MAX ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED_MAX
+#define ID_AA64MMFR0_EL1_TGRAN_2_SHIFT ID_AA64MMFR0_EL1_TGRAN16_2_SHIFT
#elif defined(CONFIG_ARM64_64K_PAGES)
-#define ID_AA64MMFR0_TGRAN_SHIFT ID_AA64MMFR0_TGRAN64_SHIFT
-#define ID_AA64MMFR0_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_TGRAN64_SUPPORTED_MIN
-#define ID_AA64MMFR0_TGRAN_SUPPORTED_MAX ID_AA64MMFR0_TGRAN64_SUPPORTED_MAX
-#define ID_AA64MMFR0_TGRAN_2_SHIFT ID_AA64MMFR0_TGRAN64_2_SHIFT
+#define ID_AA64MMFR0_EL1_TGRAN_SHIFT ID_AA64MMFR0_EL1_TGRAN64_SHIFT
+#define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_EL1_TGRAN64_SUPPORTED_MIN
+#define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MAX ID_AA64MMFR0_EL1_TGRAN64_SUPPORTED_MAX
+#define ID_AA64MMFR0_EL1_TGRAN_2_SHIFT ID_AA64MMFR0_EL1_TGRAN64_2_SHIFT
#endif
#define MVFR2_FPMISC_SHIFT 4
@@ -1028,9 +872,6 @@
#define TRFCR_ELx_ExTRE BIT(1)
#define TRFCR_ELx_E0TRE BIT(0)
-/* HCRX_EL2 definitions */
-#define HCRX_EL2_SMPME_MASK (1 << 5)
-
/* GIC Hypervisor interface registers */
/* ICH_MISR_EL2 bit definitions */
#define ICH_MISR_EOI (1 << 0)
diff --git a/arch/arm64/include/asm/system_misc.h b/arch/arm64/include/asm/system_misc.h
index 0eb7709422e2..c34344256762 100644
--- a/arch/arm64/include/asm/system_misc.h
+++ b/arch/arm64/include/asm/system_misc.h
@@ -18,7 +18,7 @@
struct pt_regs;
-void die(const char *msg, struct pt_regs *regs, int err);
+void die(const char *msg, struct pt_regs *regs, long err);
struct siginfo;
void arm64_notify_die(const char *str, struct pt_regs *regs,
diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h
index 2fc9f0861769..5c7b2f9d5913 100644
--- a/arch/arm64/include/asm/uaccess.h
+++ b/arch/arm64/include/asm/uaccess.h
@@ -203,9 +203,11 @@ static inline void uaccess_enable_privileged(void)
}
/*
- * Sanitise a uaccess pointer such that it becomes NULL if above the maximum
- * user address. In case the pointer is tagged (has the top byte set), untag
- * the pointer before checking.
+ * Sanitize a uaccess pointer such that it cannot reach any kernel address.
+ *
+ * Clearing bit 55 ensures the pointer cannot address any portion of the TTBR1
+ * address range (i.e. any kernel address), and either the pointer falls within
+ * the TTBR0 address range or must cause a fault.
*/
#define uaccess_mask_ptr(ptr) (__typeof__(ptr))__uaccess_mask_ptr(ptr)
static inline void __user *__uaccess_mask_ptr(const void __user *ptr)
@@ -213,14 +215,12 @@ static inline void __user *__uaccess_mask_ptr(const void __user *ptr)
void __user *safe_ptr;
asm volatile(
- " bics xzr, %3, %2\n"
- " csel %0, %1, xzr, eq\n"
- : "=&r" (safe_ptr)
- : "r" (ptr), "r" (TASK_SIZE_MAX - 1),
- "r" (untagged_addr(ptr))
- : "cc");
-
- csdb();
+ " bic %0, %1, %2\n"
+ : "=r" (safe_ptr)
+ : "r" (ptr),
+ "i" (BIT(55))
+ );
+
return safe_ptr;
}
diff --git a/arch/arm64/include/asm/vdso.h b/arch/arm64/include/asm/vdso.h
index f99dcb94b438..b4ae32109932 100644
--- a/arch/arm64/include/asm/vdso.h
+++ b/arch/arm64/include/asm/vdso.h
@@ -26,6 +26,9 @@
(void *)(vdso_offset_##name - VDSO_LBASE + (unsigned long)(base)); \
})
+extern char vdso_start[], vdso_end[];
+extern char vdso32_start[], vdso32_end[];
+
#endif /* !__ASSEMBLY__ */
#endif /* __ASM_VDSO_H */
diff --git a/arch/arm64/include/asm/vdso/gettimeofday.h b/arch/arm64/include/asm/vdso/gettimeofday.h
index 4f7a629df81f..764d13e2916c 100644
--- a/arch/arm64/include/asm/vdso/gettimeofday.h
+++ b/arch/arm64/include/asm/vdso/gettimeofday.h
@@ -7,8 +7,10 @@
#ifndef __ASSEMBLY__
+#include <asm/alternative.h>
#include <asm/barrier.h>
#include <asm/unistd.h>
+#include <asm/sysreg.h>
#define VDSO_HAS_CLOCK_GETRES 1
@@ -78,11 +80,20 @@ static __always_inline u64 __arch_get_hw_counter(s32 clock_mode,
return 0;
/*
- * This isb() is required to prevent that the counter value
+ * If FEAT_ECV is available, use the self-synchronizing counter.
+ * Otherwise the isb is required to prevent that the counter value
* is speculated.
- */
- isb();
- asm volatile("mrs %0, cntvct_el0" : "=r" (res) :: "memory");
+ */
+ asm volatile(
+ ALTERNATIVE("isb\n"
+ "mrs %0, cntvct_el0",
+ "nop\n"
+ __mrs_s("%0", SYS_CNTVCTSS_EL0),
+ ARM64_HAS_ECV)
+ : "=r" (res)
+ :
+ : "memory");
+
arch_counter_enforce_ordering(res);
return res;
diff --git a/arch/arm64/include/uapi/asm/hwcap.h b/arch/arm64/include/uapi/asm/hwcap.h
index 1ad2568a2569..9b245da6f507 100644
--- a/arch/arm64/include/uapi/asm/hwcap.h
+++ b/arch/arm64/include/uapi/asm/hwcap.h
@@ -92,5 +92,6 @@
#define HWCAP2_SME_FA64 (1 << 30)
#define HWCAP2_WFXT (1UL << 31)
#define HWCAP2_EBF16 (1UL << 32)
+#define HWCAP2_SVE_EBF16 (1UL << 33)
#endif /* _UAPI__ASM_HWCAP_H */
diff --git a/arch/arm64/include/uapi/asm/perf_regs.h b/arch/arm64/include/uapi/asm/perf_regs.h
index d54daafa89e3..86e556429e0e 100644
--- a/arch/arm64/include/uapi/asm/perf_regs.h
+++ b/arch/arm64/include/uapi/asm/perf_regs.h
@@ -37,5 +37,12 @@ enum perf_event_arm_regs {
PERF_REG_ARM64_SP,
PERF_REG_ARM64_PC,
PERF_REG_ARM64_MAX,
+
+ /* Extended/pseudo registers */
+ PERF_REG_ARM64_VG = 46, /* SVE Vector Granule */
+ PERF_REG_ARM64_EXTENDED_MAX
};
+
+#define PERF_REG_EXTENDED_MASK (1ULL << PERF_REG_ARM64_VG)
+
#endif /* _ASM_ARM64_PERF_REGS_H */
diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile
index 1add7b01efa7..38a0b0291edb 100644
--- a/arch/arm64/kernel/Makefile
+++ b/arch/arm64/kernel/Makefile
@@ -45,6 +45,7 @@ $(obj)/%.stub.o: $(obj)/%.o FORCE
obj-$(CONFIG_COMPAT) += sys32.o signal32.o \
sys_compat.o
obj-$(CONFIG_COMPAT) += sigreturn32.o
+obj-$(CONFIG_COMPAT_ALIGNMENT_FIXUPS) += compat_alignment.o
obj-$(CONFIG_KUSER_HELPERS) += kuser32.o
obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o
obj-$(CONFIG_MODULES) += module.o
diff --git a/arch/arm64/kernel/alternative.c b/arch/arm64/kernel/alternative.c
index d2c66507398d..91263d09ea65 100644
--- a/arch/arm64/kernel/alternative.c
+++ b/arch/arm64/kernel/alternative.c
@@ -10,17 +10,23 @@
#include <linux/init.h>
#include <linux/cpu.h>
+#include <linux/elf.h>
#include <asm/cacheflush.h>
#include <asm/alternative.h>
#include <asm/cpufeature.h>
#include <asm/insn.h>
+#include <asm/module.h>
#include <asm/sections.h>
+#include <asm/vdso.h>
#include <linux/stop_machine.h>
#define __ALT_PTR(a, f) ((void *)&(a)->f + (a)->f)
#define ALT_ORIG_PTR(a) __ALT_PTR(a, orig_offset)
#define ALT_REPL_PTR(a) __ALT_PTR(a, alt_offset)
+#define ALT_CAP(a) ((a)->cpufeature & ~ARM64_CB_BIT)
+#define ALT_HAS_CB(a) ((a)->cpufeature & ARM64_CB_BIT)
+
/* Volatile, as we may be patching the guts of READ_ONCE() */
static volatile int all_alternatives_applied;
@@ -133,7 +139,8 @@ static void clean_dcache_range_nopatch(u64 start, u64 end)
} while (cur += d_size, cur < end);
}
-static void __apply_alternatives(struct alt_region *region, bool is_module,
+static void __apply_alternatives(const struct alt_region *region,
+ bool is_module,
unsigned long *feature_mask)
{
struct alt_instr *alt;
@@ -142,30 +149,27 @@ static void __apply_alternatives(struct alt_region *region, bool is_module,
for (alt = region->begin; alt < region->end; alt++) {
int nr_inst;
+ int cap = ALT_CAP(alt);
- if (!test_bit(alt->cpufeature, feature_mask))
+ if (!test_bit(cap, feature_mask))
continue;
- /* Use ARM64_CB_PATCH as an unconditional patch */
- if (alt->cpufeature < ARM64_CB_PATCH &&
- !cpus_have_cap(alt->cpufeature))
+ if (!cpus_have_cap(cap))
continue;
- if (alt->cpufeature == ARM64_CB_PATCH)
+ if (ALT_HAS_CB(alt))
BUG_ON(alt->alt_len != 0);
else
BUG_ON(alt->alt_len != alt->orig_len);
- pr_info_once("patching kernel code\n");
-
origptr = ALT_ORIG_PTR(alt);
updptr = is_module ? origptr : lm_alias(origptr);
nr_inst = alt->orig_len / AARCH64_INSN_SIZE;
- if (alt->cpufeature < ARM64_CB_PATCH)
- alt_cb = patch_alternative;
- else
+ if (ALT_HAS_CB(alt))
alt_cb = ALT_REPL_PTR(alt);
+ else
+ alt_cb = patch_alternative;
alt_cb(alt, origptr, updptr, nr_inst);
@@ -192,30 +196,55 @@ static void __apply_alternatives(struct alt_region *region, bool is_module,
}
}
+void apply_alternatives_vdso(void)
+{
+ struct alt_region region;
+ const struct elf64_hdr *hdr;
+ const struct elf64_shdr *shdr;
+ const struct elf64_shdr *alt;
+ DECLARE_BITMAP(all_capabilities, ARM64_NCAPS);
+
+ bitmap_fill(all_capabilities, ARM64_NCAPS);
+
+ hdr = (struct elf64_hdr *)vdso_start;
+ shdr = (void *)hdr + hdr->e_shoff;
+ alt = find_section(hdr, shdr, ".altinstructions");
+ if (!alt)
+ return;
+
+ region = (struct alt_region){
+ .begin = (void *)hdr + alt->sh_offset,
+ .end = (void *)hdr + alt->sh_offset + alt->sh_size,
+ };
+
+ __apply_alternatives(&region, false, &all_capabilities[0]);
+}
+
+static const struct alt_region kernel_alternatives = {
+ .begin = (struct alt_instr *)__alt_instructions,
+ .end = (struct alt_instr *)__alt_instructions_end,
+};
+
/*
* We might be patching the stop_machine state machine, so implement a
* really simple polling protocol here.
*/
static int __apply_alternatives_multi_stop(void *unused)
{
- struct alt_region region = {
- .begin = (struct alt_instr *)__alt_instructions,
- .end = (struct alt_instr *)__alt_instructions_end,
- };
-
/* We always have a CPU 0 at this point (__init) */
if (smp_processor_id()) {
while (!all_alternatives_applied)
cpu_relax();
isb();
} else {
- DECLARE_BITMAP(remaining_capabilities, ARM64_NPATCHABLE);
+ DECLARE_BITMAP(remaining_capabilities, ARM64_NCAPS);
bitmap_complement(remaining_capabilities, boot_capabilities,
- ARM64_NPATCHABLE);
+ ARM64_NCAPS);
BUG_ON(all_alternatives_applied);
- __apply_alternatives(&region, false, remaining_capabilities);
+ __apply_alternatives(&kernel_alternatives, false,
+ remaining_capabilities);
/* Barriers provided by the cache flushing */
all_alternatives_applied = 1;
}
@@ -225,6 +254,9 @@ static int __apply_alternatives_multi_stop(void *unused)
void __init apply_alternatives_all(void)
{
+ pr_info("applying system-wide alternatives\n");
+
+ apply_alternatives_vdso();
/* better not try code patching on a live SMP system */
stop_machine(__apply_alternatives_multi_stop, NULL, cpu_online_mask);
}
@@ -236,15 +268,13 @@ void __init apply_alternatives_all(void)
*/
void __init apply_boot_alternatives(void)
{
- struct alt_region region = {
- .begin = (struct alt_instr *)__alt_instructions,
- .end = (struct alt_instr *)__alt_instructions_end,
- };
-
/* If called on non-boot cpu things could go wrong */
WARN_ON(smp_processor_id() != 0);
- __apply_alternatives(&region, false, &boot_capabilities[0]);
+ pr_info("applying boot alternatives\n");
+
+ __apply_alternatives(&kernel_alternatives, false,
+ &boot_capabilities[0]);
}
#ifdef CONFIG_MODULES
@@ -254,10 +284,18 @@ void apply_alternatives_module(void *start, size_t length)
.begin = start,
.end = start + length,
};
- DECLARE_BITMAP(all_capabilities, ARM64_NPATCHABLE);
+ DECLARE_BITMAP(all_capabilities, ARM64_NCAPS);
- bitmap_fill(all_capabilities, ARM64_NPATCHABLE);
+ bitmap_fill(all_capabilities, ARM64_NCAPS);
__apply_alternatives(&region, true, &all_capabilities[0]);
}
#endif
+
+noinstr void alt_cb_patch_nops(struct alt_instr *alt, __le32 *origptr,
+ __le32 *updptr, int nr_inst)
+{
+ for (int i = 0; i < nr_inst; i++)
+ updptr[i] = cpu_to_le32(aarch64_insn_gen_nop());
+}
+EXPORT_SYMBOL(alt_cb_patch_nops);
diff --git a/arch/arm64/kernel/compat_alignment.c b/arch/arm64/kernel/compat_alignment.c
new file mode 100644
index 000000000000..5edec2f49ec9
--- /dev/null
+++ b/arch/arm64/kernel/compat_alignment.c
@@ -0,0 +1,387 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// based on arch/arm/mm/alignment.c
+
+#include <linux/compiler.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/perf_event.h>
+#include <linux/uaccess.h>
+
+#include <asm/exception.h>
+#include <asm/ptrace.h>
+#include <asm/traps.h>
+
+/*
+ * 32-bit misaligned trap handler (c) 1998 San Mehat (CCC) -July 1998
+ *
+ * Speed optimisations and better fault handling by Russell King.
+ */
+#define CODING_BITS(i) (i & 0x0e000000)
+
+#define LDST_P_BIT(i) (i & (1 << 24)) /* Preindex */
+#define LDST_U_BIT(i) (i & (1 << 23)) /* Add offset */
+#define LDST_W_BIT(i) (i & (1 << 21)) /* Writeback */
+#define LDST_L_BIT(i) (i & (1 << 20)) /* Load */
+
+#define LDST_P_EQ_U(i) ((((i) ^ ((i) >> 1)) & (1 << 23)) == 0)
+
+#define LDSTHD_I_BIT(i) (i & (1 << 22)) /* double/half-word immed */
+
+#define RN_BITS(i) ((i >> 16) & 15) /* Rn */
+#define RD_BITS(i) ((i >> 12) & 15) /* Rd */
+#define RM_BITS(i) (i & 15) /* Rm */
+
+#define REGMASK_BITS(i) (i & 0xffff)
+
+#define BAD_INSTR 0xdeadc0de
+
+/* Thumb-2 32 bit format per ARMv7 DDI0406A A6.3, either f800h,e800h,f800h */
+#define IS_T32(hi16) \
+ (((hi16) & 0xe000) == 0xe000 && ((hi16) & 0x1800))
+
+union offset_union {
+ unsigned long un;
+ signed long sn;
+};
+
+#define TYPE_ERROR 0
+#define TYPE_FAULT 1
+#define TYPE_LDST 2
+#define TYPE_DONE 3
+
+static void
+do_alignment_finish_ldst(unsigned long addr, u32 instr, struct pt_regs *regs,
+ union offset_union offset)
+{
+ if (!LDST_U_BIT(instr))
+ offset.un = -offset.un;
+
+ if (!LDST_P_BIT(instr))
+ addr += offset.un;
+
+ if (!LDST_P_BIT(instr) || LDST_W_BIT(instr))
+ regs->regs[RN_BITS(instr)] = addr;
+}
+
+static int
+do_alignment_ldrdstrd(unsigned long addr, u32 instr, struct pt_regs *regs)
+{
+ unsigned int rd = RD_BITS(instr);
+ unsigned int rd2;
+ int load;
+
+ if ((instr & 0xfe000000) == 0xe8000000) {
+ /* ARMv7 Thumb-2 32-bit LDRD/STRD */
+ rd2 = (instr >> 8) & 0xf;
+ load = !!(LDST_L_BIT(instr));
+ } else if (((rd & 1) == 1) || (rd == 14)) {
+ return TYPE_ERROR;
+ } else {
+ load = ((instr & 0xf0) == 0xd0);
+ rd2 = rd + 1;
+ }
+
+ if (load) {
+ unsigned int val, val2;
+
+ if (get_user(val, (u32 __user *)addr) ||
+ get_user(val2, (u32 __user *)(addr + 4)))
+ return TYPE_FAULT;
+ regs->regs[rd] = val;
+ regs->regs[rd2] = val2;
+ } else {
+ if (put_user(regs->regs[rd], (u32 __user *)addr) ||
+ put_user(regs->regs[rd2], (u32 __user *)(addr + 4)))
+ return TYPE_FAULT;
+ }
+ return TYPE_LDST;
+}
+
+/*
+ * LDM/STM alignment handler.
+ *
+ * There are 4 variants of this instruction:
+ *
+ * B = rn pointer before instruction, A = rn pointer after instruction
+ * ------ increasing address ----->
+ * | | r0 | r1 | ... | rx | |
+ * PU = 01 B A
+ * PU = 11 B A
+ * PU = 00 A B
+ * PU = 10 A B
+ */
+static int
+do_alignment_ldmstm(unsigned long addr, u32 instr, struct pt_regs *regs)
+{
+ unsigned int rd, rn, nr_regs, regbits;
+ unsigned long eaddr, newaddr;
+ unsigned int val;
+
+ /* count the number of registers in the mask to be transferred */
+ nr_regs = hweight16(REGMASK_BITS(instr)) * 4;
+
+ rn = RN_BITS(instr);
+ newaddr = eaddr = regs->regs[rn];
+
+ if (!LDST_U_BIT(instr))
+ nr_regs = -nr_regs;
+ newaddr += nr_regs;
+ if (!LDST_U_BIT(instr))
+ eaddr = newaddr;
+
+ if (LDST_P_EQ_U(instr)) /* U = P */
+ eaddr += 4;
+
+ for (regbits = REGMASK_BITS(instr), rd = 0; regbits;
+ regbits >>= 1, rd += 1)
+ if (regbits & 1) {
+ if (LDST_L_BIT(instr)) {
+ if (get_user(val, (u32 __user *)eaddr))
+ return TYPE_FAULT;
+ if (rd < 15)
+ regs->regs[rd] = val;
+ else
+ regs->pc = val;
+ } else {
+ /*
+ * The PC register has a bias of +8 in ARM mode
+ * and +4 in Thumb mode. This means that a read
+ * of the value of PC should account for this.
+ * Since Thumb does not permit STM instructions
+ * to refer to PC, just add 8 here.
+ */
+ val = (rd < 15) ? regs->regs[rd] : regs->pc + 8;
+ if (put_user(val, (u32 __user *)eaddr))
+ return TYPE_FAULT;
+ }
+ eaddr += 4;
+ }
+
+ if (LDST_W_BIT(instr))
+ regs->regs[rn] = newaddr;
+
+ return TYPE_DONE;
+}
+
+/*
+ * Convert Thumb multi-word load/store instruction forms to equivalent ARM
+ * instructions so we can reuse ARM userland alignment fault fixups for Thumb.
+ *
+ * This implementation was initially based on the algorithm found in
+ * gdb/sim/arm/thumbemu.c. It is basically just a code reduction of same
+ * to convert only Thumb ld/st instruction forms to equivalent ARM forms.
+ *
+ * NOTES:
+ * 1. Comments below refer to ARM ARM DDI0100E Thumb Instruction sections.
+ * 2. If for some reason we're passed an non-ld/st Thumb instruction to
+ * decode, we return 0xdeadc0de. This should never happen under normal
+ * circumstances but if it does, we've got other problems to deal with
+ * elsewhere and we obviously can't fix those problems here.
+ */
+
+static unsigned long thumb2arm(u16 tinstr)
+{
+ u32 L = (tinstr & (1<<11)) >> 11;
+
+ switch ((tinstr & 0xf800) >> 11) {
+ /* 6.6.1 Format 1: */
+ case 0xc000 >> 11: /* 7.1.51 STMIA */
+ case 0xc800 >> 11: /* 7.1.25 LDMIA */
+ {
+ u32 Rn = (tinstr & (7<<8)) >> 8;
+ u32 W = ((L<<Rn) & (tinstr&255)) ? 0 : 1<<21;
+
+ return 0xe8800000 | W | (L<<20) | (Rn<<16) |
+ (tinstr&255);
+ }
+
+ /* 6.6.1 Format 2: */
+ case 0xb000 >> 11: /* 7.1.48 PUSH */
+ case 0xb800 >> 11: /* 7.1.47 POP */
+ if ((tinstr & (3 << 9)) == 0x0400) {
+ static const u32 subset[4] = {
+ 0xe92d0000, /* STMDB sp!,{registers} */
+ 0xe92d4000, /* STMDB sp!,{registers,lr} */
+ 0xe8bd0000, /* LDMIA sp!,{registers} */
+ 0xe8bd8000 /* LDMIA sp!,{registers,pc} */
+ };
+ return subset[(L<<1) | ((tinstr & (1<<8)) >> 8)] |
+ (tinstr & 255); /* register_list */
+ }
+ fallthrough; /* for illegal instruction case */
+
+ default:
+ return BAD_INSTR;
+ }
+}
+
+/*
+ * Convert Thumb-2 32 bit LDM, STM, LDRD, STRD to equivalent instruction
+ * handlable by ARM alignment handler, also find the corresponding handler,
+ * so that we can reuse ARM userland alignment fault fixups for Thumb.
+ *
+ * @pinstr: original Thumb-2 instruction; returns new handlable instruction
+ * @regs: register context.
+ * @poffset: return offset from faulted addr for later writeback
+ *
+ * NOTES:
+ * 1. Comments below refer to ARMv7 DDI0406A Thumb Instruction sections.
+ * 2. Register name Rt from ARMv7 is same as Rd from ARMv6 (Rd is Rt)
+ */
+static void *
+do_alignment_t32_to_handler(u32 *pinstr, struct pt_regs *regs,
+ union offset_union *poffset)
+{
+ u32 instr = *pinstr;
+ u16 tinst1 = (instr >> 16) & 0xffff;
+ u16 tinst2 = instr & 0xffff;
+
+ switch (tinst1 & 0xffe0) {
+ /* A6.3.5 Load/Store multiple */
+ case 0xe880: /* STM/STMIA/STMEA,LDM/LDMIA, PUSH/POP T2 */
+ case 0xe8a0: /* ...above writeback version */
+ case 0xe900: /* STMDB/STMFD, LDMDB/LDMEA */
+ case 0xe920: /* ...above writeback version */
+ /* no need offset decision since handler calculates it */
+ return do_alignment_ldmstm;
+
+ case 0xf840: /* POP/PUSH T3 (single register) */
+ if (RN_BITS(instr) == 13 && (tinst2 & 0x09ff) == 0x0904) {
+ u32 L = !!(LDST_L_BIT(instr));
+ const u32 subset[2] = {
+ 0xe92d0000, /* STMDB sp!,{registers} */
+ 0xe8bd0000, /* LDMIA sp!,{registers} */
+ };
+ *pinstr = subset[L] | (1<<RD_BITS(instr));
+ return do_alignment_ldmstm;
+ }
+ /* Else fall through for illegal instruction case */
+ break;
+
+ /* A6.3.6 Load/store double, STRD/LDRD(immed, lit, reg) */
+ case 0xe860:
+ case 0xe960:
+ case 0xe8e0:
+ case 0xe9e0:
+ poffset->un = (tinst2 & 0xff) << 2;
+ fallthrough;
+
+ case 0xe940:
+ case 0xe9c0:
+ return do_alignment_ldrdstrd;
+
+ /*
+ * No need to handle load/store instructions up to word size
+ * since ARMv6 and later CPUs can perform unaligned accesses.
+ */
+ default:
+ break;
+ }
+ return NULL;
+}
+
+static int alignment_get_arm(struct pt_regs *regs, __le32 __user *ip, u32 *inst)
+{
+ __le32 instr = 0;
+ int fault;
+
+ fault = get_user(instr, ip);
+ if (fault)
+ return fault;
+
+ *inst = __le32_to_cpu(instr);
+ return 0;
+}
+
+static int alignment_get_thumb(struct pt_regs *regs, __le16 __user *ip, u16 *inst)
+{
+ __le16 instr = 0;
+ int fault;
+
+ fault = get_user(instr, ip);
+ if (fault)
+ return fault;
+
+ *inst = __le16_to_cpu(instr);
+ return 0;
+}
+
+int do_compat_alignment_fixup(unsigned long addr, struct pt_regs *regs)
+{
+ union offset_union offset;
+ unsigned long instrptr;
+ int (*handler)(unsigned long addr, u32 instr, struct pt_regs *regs);
+ unsigned int type;
+ u32 instr = 0;
+ u16 tinstr = 0;
+ int isize = 4;
+ int thumb2_32b = 0;
+ int fault;
+
+ instrptr = instruction_pointer(regs);
+
+ if (compat_thumb_mode(regs)) {
+ __le16 __user *ptr = (__le16 __user *)(instrptr & ~1);
+
+ fault = alignment_get_thumb(regs, ptr, &tinstr);
+ if (!fault) {
+ if (IS_T32(tinstr)) {
+ /* Thumb-2 32-bit */
+ u16 tinst2;
+ fault = alignment_get_thumb(regs, ptr + 1, &tinst2);
+ instr = ((u32)tinstr << 16) | tinst2;
+ thumb2_32b = 1;
+ } else {
+ isize = 2;
+ instr = thumb2arm(tinstr);
+ }
+ }
+ } else {
+ fault = alignment_get_arm(regs, (__le32 __user *)instrptr, &instr);
+ }
+
+ if (fault)
+ return 1;
+
+ switch (CODING_BITS(instr)) {
+ case 0x00000000: /* 3.13.4 load/store instruction extensions */
+ if (LDSTHD_I_BIT(instr))
+ offset.un = (instr & 0xf00) >> 4 | (instr & 15);
+ else
+ offset.un = regs->regs[RM_BITS(instr)];
+
+ if ((instr & 0x001000f0) == 0x000000d0 || /* LDRD */
+ (instr & 0x001000f0) == 0x000000f0) /* STRD */
+ handler = do_alignment_ldrdstrd;
+ else
+ return 1;
+ break;
+
+ case 0x08000000: /* ldm or stm, or thumb-2 32bit instruction */
+ if (thumb2_32b) {
+ offset.un = 0;
+ handler = do_alignment_t32_to_handler(&instr, regs, &offset);
+ } else {
+ offset.un = 0;
+ handler = do_alignment_ldmstm;
+ }
+ break;
+
+ default:
+ return 1;
+ }
+
+ type = handler(addr, instr, regs);
+
+ if (type == TYPE_ERROR || type == TYPE_FAULT)
+ return 1;
+
+ if (type == TYPE_LDST)
+ do_alignment_finish_ldst(addr, instr, regs, offset);
+
+ perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, regs->pc);
+ arm64_skip_faulting_instruction(regs, isize);
+
+ return 0;
+}
diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c
index 53b973b6059f..58ca4f6b25d6 100644
--- a/arch/arm64/kernel/cpu_errata.c
+++ b/arch/arm64/kernel/cpu_errata.c
@@ -121,6 +121,22 @@ cpu_enable_cache_maint_trap(const struct arm64_cpu_capabilities *__unused)
sysreg_clear_set(sctlr_el1, SCTLR_EL1_UCI, 0);
}
+static DEFINE_RAW_SPINLOCK(reg_user_mask_modification);
+static void __maybe_unused
+cpu_clear_bf16_from_user_emulation(const struct arm64_cpu_capabilities *__unused)
+{
+ struct arm64_ftr_reg *regp;
+
+ regp = get_arm64_ftr_reg(SYS_ID_AA64ISAR1_EL1);
+ if (!regp)
+ return;
+
+ raw_spin_lock(&reg_user_mask_modification);
+ if (regp->user_mask & ID_AA64ISAR1_EL1_BF16_MASK)
+ regp->user_mask &= ~ID_AA64ISAR1_EL1_BF16_MASK;
+ raw_spin_unlock(&reg_user_mask_modification);
+}
+
#define CAP_MIDR_RANGE(model, v_min, r_min, v_max, r_max) \
.matches = is_affected_midr_range, \
.midr_range = MIDR_RANGE(model, v_min, r_min, v_max, r_max)
@@ -692,6 +708,16 @@ const struct arm64_cpu_capabilities arm64_errata[] = {
.type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM,
},
#endif
+#ifdef CONFIG_ARM64_ERRATUM_2658417
+ {
+ .desc = "ARM erratum 2658417",
+ .capability = ARM64_WORKAROUND_2658417,
+ /* Cortex-A510 r0p0 - r1p1 */
+ ERRATA_MIDR_RANGE(MIDR_CORTEX_A510, 0, 0, 1, 1),
+ MIDR_FIXED(MIDR_CPU_VAR_REV(1,1), BIT(25)),
+ .cpu_enable = cpu_clear_bf16_from_user_emulation,
+ },
+#endif
{
}
};
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index d8361691efeb..6062454a9067 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -108,8 +108,7 @@ DECLARE_BITMAP(cpu_hwcaps, ARM64_NCAPS);
EXPORT_SYMBOL(cpu_hwcaps);
static struct arm64_cpu_capabilities const __ro_after_init *cpu_hwcaps_ptrs[ARM64_NCAPS];
-/* Need also bit for ARM64_CB_PATCH */
-DECLARE_BITMAP(boot_capabilities, ARM64_NPATCHABLE);
+DECLARE_BITMAP(boot_capabilities, ARM64_NCAPS);
bool arm64_use_ng_mappings = false;
EXPORT_SYMBOL(arm64_use_ng_mappings);
@@ -134,31 +133,12 @@ DEFINE_STATIC_KEY_FALSE(arm64_mismatched_32bit_el0);
*/
static cpumask_var_t cpu_32bit_el0_mask __cpumask_var_read_mostly;
-/*
- * Flag to indicate if we have computed the system wide
- * capabilities based on the boot time active CPUs. This
- * will be used to determine if a new booting CPU should
- * go through the verification process to make sure that it
- * supports the system capabilities, without using a hotplug
- * notifier. This is also used to decide if we could use
- * the fast path for checking constant CPU caps.
- */
-DEFINE_STATIC_KEY_FALSE(arm64_const_caps_ready);
-EXPORT_SYMBOL(arm64_const_caps_ready);
-static inline void finalize_system_capabilities(void)
-{
- static_branch_enable(&arm64_const_caps_ready);
-}
-
void dump_cpu_features(void)
{
/* file-wide pr_fmt adds "CPU features: " prefix */
pr_emerg("0x%*pb\n", ARM64_NCAPS, &cpu_hwcaps);
}
-DEFINE_STATIC_KEY_ARRAY_FALSE(cpu_hwcap_keys, ARM64_NCAPS);
-EXPORT_SYMBOL(cpu_hwcap_keys);
-
#define __ARM64_FTR_BITS(SIGNED, VISIBLE, STRICT, TYPE, SHIFT, WIDTH, SAFE_VAL) \
{ \
.sign = SIGNED, \
@@ -243,35 +223,35 @@ static const struct arm64_ftr_bits ftr_id_aa64isar2[] = {
};
static const struct arm64_ftr_bits ftr_id_aa64pfr0[] = {
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_CSV3_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_CSV2_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_DIT_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_AMU_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_MPAM_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_SEL2_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_CSV3_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_CSV2_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_DIT_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_AMU_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_MPAM_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_SEL2_SHIFT, 4, 0),
ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SVE),
- FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_SVE_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_RAS_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_GIC_SHIFT, 4, 0),
- S_ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_ASIMD_SHIFT, 4, ID_AA64PFR0_ASIMD_NI),
- S_ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_FP_SHIFT, 4, ID_AA64PFR0_FP_NI),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL3_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL2_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_SHIFT, 4, ID_AA64PFR0_ELx_64BIT_ONLY),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL0_SHIFT, 4, ID_AA64PFR0_ELx_64BIT_ONLY),
+ FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_SVE_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_RAS_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_GIC_SHIFT, 4, 0),
+ S_ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_AdvSIMD_SHIFT, 4, ID_AA64PFR0_EL1_AdvSIMD_NI),
+ S_ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_FP_SHIFT, 4, ID_AA64PFR0_EL1_FP_NI),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_EL3_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_EL2_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_EL1_SHIFT, 4, ID_AA64PFR0_EL1_ELx_64BIT_ONLY),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_EL0_SHIFT, 4, ID_AA64PFR0_EL1_ELx_64BIT_ONLY),
ARM64_FTR_END,
};
static const struct arm64_ftr_bits ftr_id_aa64pfr1[] = {
ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_SME),
- FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_SME_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_MPAMFRAC_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_RASFRAC_SHIFT, 4, 0),
+ FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_EL1_SME_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_EL1_MPAM_frac_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_EL1_RAS_frac_SHIFT, 4, 0),
ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_MTE),
- FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_MTE_SHIFT, 4, ID_AA64PFR1_MTE_NI),
- ARM64_FTR_BITS(FTR_VISIBLE, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR1_SSBS_SHIFT, 4, ID_AA64PFR1_SSBS_PSTATE_NI),
+ FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_EL1_MTE_SHIFT, 4, ID_AA64PFR1_EL1_MTE_NI),
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR1_EL1_SSBS_SHIFT, 4, ID_AA64PFR1_EL1_SSBS_NI),
ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_BTI),
- FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_BT_SHIFT, 4, 0),
+ FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_EL1_BT_SHIFT, 4, 0),
ARM64_FTR_END,
};
@@ -316,9 +296,9 @@ static const struct arm64_ftr_bits ftr_id_aa64smfr0[] = {
};
static const struct arm64_ftr_bits ftr_id_aa64mmfr0[] = {
- ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_ECV_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_FGT_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_EXS_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_EL1_ECV_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_EL1_FGT_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_EL1_EXS_SHIFT, 4, 0),
/*
* Page size not being supported at Stage-2 is not fatal. You
* just give up KVM if PAGE_SIZE isn't supported there. Go fix
@@ -334,9 +314,9 @@ static const struct arm64_ftr_bits ftr_id_aa64mmfr0[] = {
* fields are inconsistent across vCPUs, then it isn't worth
* trying to bring KVM up.
*/
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_EXACT, ID_AA64MMFR0_TGRAN4_2_SHIFT, 4, 1),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_EXACT, ID_AA64MMFR0_TGRAN64_2_SHIFT, 4, 1),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_EXACT, ID_AA64MMFR0_TGRAN16_2_SHIFT, 4, 1),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_EXACT, ID_AA64MMFR0_EL1_TGRAN4_2_SHIFT, 4, 1),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_EXACT, ID_AA64MMFR0_EL1_TGRAN64_2_SHIFT, 4, 1),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_EXACT, ID_AA64MMFR0_EL1_TGRAN16_2_SHIFT, 4, 1),
/*
* We already refuse to boot CPUs that don't support our configured
* page size, so we can only detect mismatches for a page size other
@@ -344,55 +324,55 @@ static const struct arm64_ftr_bits ftr_id_aa64mmfr0[] = {
* exist in the wild so, even though we don't like it, we'll have to go
* along with it and treat them as non-strict.
*/
- S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_TGRAN4_SHIFT, 4, ID_AA64MMFR0_TGRAN4_NI),
- S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_TGRAN64_SHIFT, 4, ID_AA64MMFR0_TGRAN64_NI),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_TGRAN16_SHIFT, 4, ID_AA64MMFR0_TGRAN16_NI),
+ S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_EL1_TGRAN4_SHIFT, 4, ID_AA64MMFR0_EL1_TGRAN4_NI),
+ S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_EL1_TGRAN64_SHIFT, 4, ID_AA64MMFR0_EL1_TGRAN64_NI),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_EL1_TGRAN16_SHIFT, 4, ID_AA64MMFR0_EL1_TGRAN16_NI),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_BIGENDEL0_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_EL1_BIGENDEL0_SHIFT, 4, 0),
/* Linux shouldn't care about secure memory */
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_SNSMEM_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_BIGENDEL_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_ASID_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_EL1_SNSMEM_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_EL1_BIGEND_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_EL1_ASIDBITS_SHIFT, 4, 0),
/*
* Differing PARange is fine as long as all peripherals and memory are mapped
* within the minimum PARange of all CPUs
*/
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_PARANGE_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_EL1_PARANGE_SHIFT, 4, 0),
ARM64_FTR_END,
};
static const struct arm64_ftr_bits ftr_id_aa64mmfr1[] = {
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_TIDCP1_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_AFP_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_ETS_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_TWED_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_XNX_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_HIGHER_SAFE, ID_AA64MMFR1_SPECSEI_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_PAN_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_LOR_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_HPD_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_VHE_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_VMIDBITS_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_HADBS_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_EL1_TIDCP1_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_EL1_AFP_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_EL1_ETS_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_EL1_TWED_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_EL1_XNX_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_HIGHER_SAFE, ID_AA64MMFR1_EL1_SpecSEI_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_EL1_PAN_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_EL1_LO_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_EL1_HPDS_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_EL1_VH_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_EL1_VMIDBits_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_EL1_HAFDBS_SHIFT, 4, 0),
ARM64_FTR_END,
};
static const struct arm64_ftr_bits ftr_id_aa64mmfr2[] = {
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_E0PD_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_EVT_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_BBM_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_TTL_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_FWB_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_IDS_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_AT_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_ST_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_NV_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_CCIDX_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_LVA_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_IESB_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_LSM_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_UAO_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_CNP_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_EL1_E0PD_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_EL1_EVT_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_EL1_BBM_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_EL1_TTL_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_EL1_FWB_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_EL1_IDS_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_EL1_AT_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_EL1_ST_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_EL1_NV_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_EL1_CCIDX_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_EL1_VARange_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_EL1_IESB_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_EL1_LSM_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_EL1_UAO_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_EL1_CnP_SHIFT, 4, 0),
ARM64_FTR_END,
};
@@ -434,17 +414,17 @@ static const struct arm64_ftr_bits ftr_id_mmfr0[] = {
};
static const struct arm64_ftr_bits ftr_id_aa64dfr0[] = {
- S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR0_DOUBLELOCK_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64DFR0_PMSVER_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR0_CTX_CMPS_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR0_WRPS_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR0_BRPS_SHIFT, 4, 0),
+ S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR0_EL1_DoubleLock_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64DFR0_EL1_PMSVer_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR0_EL1_CTX_CMPs_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR0_EL1_WRPs_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR0_EL1_BRPs_SHIFT, 4, 0),
/*
* We can instantiate multiple PMU instances with different levels
* of support.
*/
- S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_EXACT, ID_AA64DFR0_PMUVER_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64DFR0_DEBUGVER_SHIFT, 4, 0x6),
+ S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_EXACT, ID_AA64DFR0_EL1_PMUVer_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64DFR0_EL1_DebugVer_SHIFT, 4, 0x6),
ARM64_FTR_END,
};
@@ -750,7 +730,7 @@ static struct arm64_ftr_reg *get_arm64_ftr_reg_nowarn(u32 sys_id)
* returns - Upon success, matching ftr_reg entry for id.
* - NULL on failure but with an WARN_ON().
*/
-static struct arm64_ftr_reg *get_arm64_ftr_reg(u32 sys_id)
+struct arm64_ftr_reg *get_arm64_ftr_reg(u32 sys_id)
{
struct arm64_ftr_reg *reg;
@@ -1392,6 +1372,12 @@ u64 __read_sysreg_by_encoding(u32 sys_id)
#include <linux/irqchip/arm-gic-v3.h>
static bool
+has_always(const struct arm64_cpu_capabilities *entry, int scope)
+{
+ return true;
+}
+
+static bool
feature_matches(u64 reg, const struct arm64_cpu_capabilities *entry)
{
int val = cpuid_feature_extract_field_width(reg, entry->field_pos,
@@ -1401,17 +1387,40 @@ feature_matches(u64 reg, const struct arm64_cpu_capabilities *entry)
return val >= entry->min_field_value;
}
-static bool
-has_cpuid_feature(const struct arm64_cpu_capabilities *entry, int scope)
+static u64
+read_scoped_sysreg(const struct arm64_cpu_capabilities *entry, int scope)
{
- u64 val;
-
WARN_ON(scope == SCOPE_LOCAL_CPU && preemptible());
if (scope == SCOPE_SYSTEM)
- val = read_sanitised_ftr_reg(entry->sys_reg);
+ return read_sanitised_ftr_reg(entry->sys_reg);
else
- val = __read_sysreg_by_encoding(entry->sys_reg);
+ return __read_sysreg_by_encoding(entry->sys_reg);
+}
+static bool
+has_user_cpuid_feature(const struct arm64_cpu_capabilities *entry, int scope)
+{
+ int mask;
+ struct arm64_ftr_reg *regp;
+ u64 val = read_scoped_sysreg(entry, scope);
+
+ regp = get_arm64_ftr_reg(entry->sys_reg);
+ if (!regp)
+ return false;
+
+ mask = cpuid_feature_extract_unsigned_field_width(regp->user_mask,
+ entry->field_pos,
+ entry->field_width);
+ if (!mask)
+ return false;
+
+ return feature_matches(val, entry);
+}
+
+static bool
+has_cpuid_feature(const struct arm64_cpu_capabilities *entry, int scope)
+{
+ u64 val = read_scoped_sysreg(entry, scope);
return feature_matches(val, entry);
}
@@ -1492,7 +1501,7 @@ static bool has_no_fpsimd(const struct arm64_cpu_capabilities *entry, int __unus
u64 pfr0 = read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1);
return cpuid_feature_extract_signed_field(pfr0,
- ID_AA64PFR0_FP_SHIFT) < 0;
+ ID_AA64PFR0_EL1_FP_SHIFT) < 0;
}
static bool has_cache_idc(const struct arm64_cpu_capabilities *entry,
@@ -1571,7 +1580,7 @@ bool kaslr_requires_kpti(void)
if (IS_ENABLED(CONFIG_ARM64_E0PD)) {
u64 mmfr2 = read_sysreg_s(SYS_ID_AA64MMFR2_EL1);
if (cpuid_feature_extract_unsigned_field(mmfr2,
- ID_AA64MMFR2_E0PD_SHIFT))
+ ID_AA64MMFR2_EL1_E0PD_SHIFT))
return false;
}
@@ -2034,7 +2043,8 @@ static void bti_enable(const struct arm64_cpu_capabilities *__unused)
static void cpu_enable_mte(struct arm64_cpu_capabilities const *cap)
{
sysreg_clear_set(sctlr_el1, 0, SCTLR_ELx_ATA | SCTLR_EL1_ATA0);
- isb();
+
+ mte_cpu_setup();
/*
* Clear the tags in the zero page. This needs to be done via the
@@ -2088,12 +2098,22 @@ cpucap_panic_on_conflict(const struct arm64_cpu_capabilities *cap)
static const struct arm64_cpu_capabilities arm64_features[] = {
{
+ .capability = ARM64_ALWAYS_BOOT,
+ .type = ARM64_CPUCAP_BOOT_CPU_FEATURE,
+ .matches = has_always,
+ },
+ {
+ .capability = ARM64_ALWAYS_SYSTEM,
+ .type = ARM64_CPUCAP_SYSTEM_FEATURE,
+ .matches = has_always,
+ },
+ {
.desc = "GIC system register CPU interface",
.capability = ARM64_HAS_SYSREG_GIC_CPUIF,
.type = ARM64_CPUCAP_STRICT_BOOT_CPU_FEATURE,
.matches = has_useable_gicv3_cpuif,
.sys_reg = SYS_ID_AA64PFR0_EL1,
- .field_pos = ID_AA64PFR0_GIC_SHIFT,
+ .field_pos = ID_AA64PFR0_EL1_GIC_SHIFT,
.field_width = 4,
.sign = FTR_UNSIGNED,
.min_field_value = 1,
@@ -2104,7 +2124,7 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.type = ARM64_CPUCAP_SYSTEM_FEATURE,
.matches = has_cpuid_feature,
.sys_reg = SYS_ID_AA64MMFR0_EL1,
- .field_pos = ID_AA64MMFR0_ECV_SHIFT,
+ .field_pos = ID_AA64MMFR0_EL1_ECV_SHIFT,
.field_width = 4,
.sign = FTR_UNSIGNED,
.min_field_value = 1,
@@ -2116,7 +2136,7 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.type = ARM64_CPUCAP_SYSTEM_FEATURE,
.matches = has_cpuid_feature,
.sys_reg = SYS_ID_AA64MMFR1_EL1,
- .field_pos = ID_AA64MMFR1_PAN_SHIFT,
+ .field_pos = ID_AA64MMFR1_EL1_PAN_SHIFT,
.field_width = 4,
.sign = FTR_UNSIGNED,
.min_field_value = 1,
@@ -2130,7 +2150,7 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.type = ARM64_CPUCAP_SYSTEM_FEATURE,
.matches = has_cpuid_feature,
.sys_reg = SYS_ID_AA64MMFR1_EL1,
- .field_pos = ID_AA64MMFR1_PAN_SHIFT,
+ .field_pos = ID_AA64MMFR1_EL1_PAN_SHIFT,
.field_width = 4,
.sign = FTR_UNSIGNED,
.min_field_value = 3,
@@ -2168,9 +2188,9 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.matches = has_32bit_el0,
.sys_reg = SYS_ID_AA64PFR0_EL1,
.sign = FTR_UNSIGNED,
- .field_pos = ID_AA64PFR0_EL0_SHIFT,
+ .field_pos = ID_AA64PFR0_EL1_EL0_SHIFT,
.field_width = 4,
- .min_field_value = ID_AA64PFR0_ELx_32BIT_64BIT,
+ .min_field_value = ID_AA64PFR0_EL1_ELx_32BIT_64BIT,
},
#ifdef CONFIG_KVM
{
@@ -2180,9 +2200,9 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.matches = has_cpuid_feature,
.sys_reg = SYS_ID_AA64PFR0_EL1,
.sign = FTR_UNSIGNED,
- .field_pos = ID_AA64PFR0_EL1_SHIFT,
+ .field_pos = ID_AA64PFR0_EL1_EL1_SHIFT,
.field_width = 4,
- .min_field_value = ID_AA64PFR0_ELx_32BIT_64BIT,
+ .min_field_value = ID_AA64PFR0_EL1_ELx_32BIT_64BIT,
},
{
.desc = "Protected KVM",
@@ -2201,7 +2221,7 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
* more details.
*/
.sys_reg = SYS_ID_AA64PFR0_EL1,
- .field_pos = ID_AA64PFR0_CSV3_SHIFT,
+ .field_pos = ID_AA64PFR0_EL1_CSV3_SHIFT,
.field_width = 4,
.min_field_value = 1,
.matches = unmap_kernel_at_el0,
@@ -2244,9 +2264,9 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.capability = ARM64_SVE,
.sys_reg = SYS_ID_AA64PFR0_EL1,
.sign = FTR_UNSIGNED,
- .field_pos = ID_AA64PFR0_SVE_SHIFT,
+ .field_pos = ID_AA64PFR0_EL1_SVE_SHIFT,
.field_width = 4,
- .min_field_value = ID_AA64PFR0_SVE,
+ .min_field_value = ID_AA64PFR0_EL1_SVE_IMP,
.matches = has_cpuid_feature,
.cpu_enable = sve_kernel_enable,
},
@@ -2259,9 +2279,9 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.matches = has_cpuid_feature,
.sys_reg = SYS_ID_AA64PFR0_EL1,
.sign = FTR_UNSIGNED,
- .field_pos = ID_AA64PFR0_RAS_SHIFT,
+ .field_pos = ID_AA64PFR0_EL1_RAS_SHIFT,
.field_width = 4,
- .min_field_value = ID_AA64PFR0_RAS_V1,
+ .min_field_value = ID_AA64PFR0_EL1_RAS_IMP,
.cpu_enable = cpu_clear_disr,
},
#endif /* CONFIG_ARM64_RAS_EXTN */
@@ -2278,9 +2298,9 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.matches = has_amu,
.sys_reg = SYS_ID_AA64PFR0_EL1,
.sign = FTR_UNSIGNED,
- .field_pos = ID_AA64PFR0_AMU_SHIFT,
+ .field_pos = ID_AA64PFR0_EL1_AMU_SHIFT,
.field_width = 4,
- .min_field_value = ID_AA64PFR0_AMU,
+ .min_field_value = ID_AA64PFR0_EL1_AMU_IMP,
.cpu_enable = cpu_amu_enable,
},
#endif /* CONFIG_ARM64_AMU_EXTN */
@@ -2303,7 +2323,7 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.capability = ARM64_HAS_STAGE2_FWB,
.sys_reg = SYS_ID_AA64MMFR2_EL1,
.sign = FTR_UNSIGNED,
- .field_pos = ID_AA64MMFR2_FWB_SHIFT,
+ .field_pos = ID_AA64MMFR2_EL1_FWB_SHIFT,
.field_width = 4,
.min_field_value = 1,
.matches = has_cpuid_feature,
@@ -2314,7 +2334,7 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.capability = ARM64_HAS_ARMv8_4_TTL,
.sys_reg = SYS_ID_AA64MMFR2_EL1,
.sign = FTR_UNSIGNED,
- .field_pos = ID_AA64MMFR2_TTL_SHIFT,
+ .field_pos = ID_AA64MMFR2_EL1_TTL_SHIFT,
.field_width = 4,
.min_field_value = 1,
.matches = has_cpuid_feature,
@@ -2344,7 +2364,7 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.capability = ARM64_HW_DBM,
.sys_reg = SYS_ID_AA64MMFR1_EL1,
.sign = FTR_UNSIGNED,
- .field_pos = ID_AA64MMFR1_HADBS_SHIFT,
+ .field_pos = ID_AA64MMFR1_EL1_HAFDBS_SHIFT,
.field_width = 4,
.min_field_value = 2,
.matches = has_hw_dbm,
@@ -2367,10 +2387,10 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.type = ARM64_CPUCAP_SYSTEM_FEATURE,
.matches = has_cpuid_feature,
.sys_reg = SYS_ID_AA64PFR1_EL1,
- .field_pos = ID_AA64PFR1_SSBS_SHIFT,
+ .field_pos = ID_AA64PFR1_EL1_SSBS_SHIFT,
.field_width = 4,
.sign = FTR_UNSIGNED,
- .min_field_value = ID_AA64PFR1_SSBS_PSTATE_ONLY,
+ .min_field_value = ID_AA64PFR1_EL1_SSBS_IMP,
},
#ifdef CONFIG_ARM64_CNP
{
@@ -2380,7 +2400,7 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.matches = has_useable_cnp,
.sys_reg = SYS_ID_AA64MMFR2_EL1,
.sign = FTR_UNSIGNED,
- .field_pos = ID_AA64MMFR2_CNP_SHIFT,
+ .field_pos = ID_AA64MMFR2_EL1_CnP_SHIFT,
.field_width = 4,
.min_field_value = 1,
.cpu_enable = cpu_enable_cnp,
@@ -2485,7 +2505,7 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.type = ARM64_CPUCAP_STRICT_BOOT_CPU_FEATURE,
.matches = can_use_gic_priorities,
.sys_reg = SYS_ID_AA64PFR0_EL1,
- .field_pos = ID_AA64PFR0_GIC_SHIFT,
+ .field_pos = ID_AA64PFR0_EL1_GIC_SHIFT,
.field_width = 4,
.sign = FTR_UNSIGNED,
.min_field_value = 1,
@@ -2499,7 +2519,7 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.sys_reg = SYS_ID_AA64MMFR2_EL1,
.sign = FTR_UNSIGNED,
.field_width = 4,
- .field_pos = ID_AA64MMFR2_E0PD_SHIFT,
+ .field_pos = ID_AA64MMFR2_EL1_E0PD_SHIFT,
.matches = has_cpuid_feature,
.min_field_value = 1,
.cpu_enable = cpu_enable_e0pd,
@@ -2528,9 +2548,9 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.matches = has_cpuid_feature,
.cpu_enable = bti_enable,
.sys_reg = SYS_ID_AA64PFR1_EL1,
- .field_pos = ID_AA64PFR1_BT_SHIFT,
+ .field_pos = ID_AA64PFR1_EL1_BT_SHIFT,
.field_width = 4,
- .min_field_value = ID_AA64PFR1_BT_BTI,
+ .min_field_value = ID_AA64PFR1_EL1_BT_IMP,
.sign = FTR_UNSIGNED,
},
#endif
@@ -2541,9 +2561,9 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.type = ARM64_CPUCAP_STRICT_BOOT_CPU_FEATURE,
.matches = has_cpuid_feature,
.sys_reg = SYS_ID_AA64PFR1_EL1,
- .field_pos = ID_AA64PFR1_MTE_SHIFT,
+ .field_pos = ID_AA64PFR1_EL1_MTE_SHIFT,
.field_width = 4,
- .min_field_value = ID_AA64PFR1_MTE,
+ .min_field_value = ID_AA64PFR1_EL1_MTE_MTE2,
.sign = FTR_UNSIGNED,
.cpu_enable = cpu_enable_mte,
},
@@ -2553,9 +2573,9 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.type = ARM64_CPUCAP_BOOT_CPU_FEATURE,
.matches = has_cpuid_feature,
.sys_reg = SYS_ID_AA64PFR1_EL1,
- .field_pos = ID_AA64PFR1_MTE_SHIFT,
+ .field_pos = ID_AA64PFR1_EL1_MTE_SHIFT,
.field_width = 4,
- .min_field_value = ID_AA64PFR1_MTE_ASYMM,
+ .min_field_value = ID_AA64PFR1_EL1_MTE_MTE3,
.sign = FTR_UNSIGNED,
},
#endif /* CONFIG_ARM64_MTE */
@@ -2577,9 +2597,9 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.capability = ARM64_SME,
.sys_reg = SYS_ID_AA64PFR1_EL1,
.sign = FTR_UNSIGNED,
- .field_pos = ID_AA64PFR1_SME_SHIFT,
+ .field_pos = ID_AA64PFR1_EL1_SME_SHIFT,
.field_width = 4,
- .min_field_value = ID_AA64PFR1_SME,
+ .min_field_value = ID_AA64PFR1_EL1_SME_IMP,
.matches = has_cpuid_feature,
.cpu_enable = sme_kernel_enable,
},
@@ -2614,9 +2634,9 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.type = ARM64_CPUCAP_SYSTEM_FEATURE,
.sys_reg = SYS_ID_AA64MMFR1_EL1,
.sign = FTR_UNSIGNED,
- .field_pos = ID_AA64MMFR1_TIDCP1_SHIFT,
+ .field_pos = ID_AA64MMFR1_EL1_TIDCP1_SHIFT,
.field_width = 4,
- .min_field_value = ID_AA64MMFR1_TIDCP1_IMP,
+ .min_field_value = ID_AA64MMFR1_EL1_TIDCP1_IMP,
.matches = has_cpuid_feature,
.cpu_enable = cpu_trap_el0_impdef,
},
@@ -2624,7 +2644,7 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
};
#define HWCAP_CPUID_MATCH(reg, field, width, s, min_value) \
- .matches = has_cpuid_feature, \
+ .matches = has_user_cpuid_feature, \
.sys_reg = reg, \
.field_pos = field, \
.field_width = width, \
@@ -2708,11 +2728,11 @@ static const struct arm64_cpu_capabilities arm64_elf_hwcaps[] = {
HWCAP_CAP(SYS_ID_AA64ISAR0_EL1, ID_AA64ISAR0_EL1_TS_SHIFT, 4, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_FLAGM),
HWCAP_CAP(SYS_ID_AA64ISAR0_EL1, ID_AA64ISAR0_EL1_TS_SHIFT, 4, FTR_UNSIGNED, 2, CAP_HWCAP, KERNEL_HWCAP_FLAGM2),
HWCAP_CAP(SYS_ID_AA64ISAR0_EL1, ID_AA64ISAR0_EL1_RNDR_SHIFT, 4, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_RNG),
- HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_FP_SHIFT, 4, FTR_SIGNED, 0, CAP_HWCAP, KERNEL_HWCAP_FP),
- HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_FP_SHIFT, 4, FTR_SIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_FPHP),
- HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_ASIMD_SHIFT, 4, FTR_SIGNED, 0, CAP_HWCAP, KERNEL_HWCAP_ASIMD),
- HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_ASIMD_SHIFT, 4, FTR_SIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_ASIMDHP),
- HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_DIT_SHIFT, 4, FTR_SIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_DIT),
+ HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_EL1_FP_SHIFT, 4, FTR_SIGNED, 0, CAP_HWCAP, KERNEL_HWCAP_FP),
+ HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_EL1_FP_SHIFT, 4, FTR_SIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_FPHP),
+ HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_EL1_AdvSIMD_SHIFT, 4, FTR_SIGNED, 0, CAP_HWCAP, KERNEL_HWCAP_ASIMD),
+ HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_EL1_AdvSIMD_SHIFT, 4, FTR_SIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_ASIMDHP),
+ HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_EL1_DIT_SHIFT, 4, FTR_SIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_DIT),
HWCAP_CAP(SYS_ID_AA64ISAR1_EL1, ID_AA64ISAR1_EL1_DPB_SHIFT, 4, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_DCPOP),
HWCAP_CAP(SYS_ID_AA64ISAR1_EL1, ID_AA64ISAR1_EL1_DPB_SHIFT, 4, FTR_UNSIGNED, 2, CAP_HWCAP, KERNEL_HWCAP_DCPODP),
HWCAP_CAP(SYS_ID_AA64ISAR1_EL1, ID_AA64ISAR1_EL1_JSCVT_SHIFT, 4, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_JSCVT),
@@ -2725,38 +2745,39 @@ static const struct arm64_cpu_capabilities arm64_elf_hwcaps[] = {
HWCAP_CAP(SYS_ID_AA64ISAR1_EL1, ID_AA64ISAR1_EL1_BF16_SHIFT, 4, FTR_UNSIGNED, 2, CAP_HWCAP, KERNEL_HWCAP_EBF16),
HWCAP_CAP(SYS_ID_AA64ISAR1_EL1, ID_AA64ISAR1_EL1_DGH_SHIFT, 4, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_DGH),
HWCAP_CAP(SYS_ID_AA64ISAR1_EL1, ID_AA64ISAR1_EL1_I8MM_SHIFT, 4, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_I8MM),
- HWCAP_CAP(SYS_ID_AA64MMFR2_EL1, ID_AA64MMFR2_AT_SHIFT, 4, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_USCAT),
+ HWCAP_CAP(SYS_ID_AA64MMFR2_EL1, ID_AA64MMFR2_EL1_AT_SHIFT, 4, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_USCAT),
#ifdef CONFIG_ARM64_SVE
- HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_SVE_SHIFT, 4, FTR_UNSIGNED, ID_AA64PFR0_SVE, CAP_HWCAP, KERNEL_HWCAP_SVE),
+ HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_EL1_SVE_SHIFT, 4, FTR_UNSIGNED, ID_AA64PFR0_EL1_SVE_IMP, CAP_HWCAP, KERNEL_HWCAP_SVE),
HWCAP_CAP(SYS_ID_AA64ZFR0_EL1, ID_AA64ZFR0_EL1_SVEver_SHIFT, 4, FTR_UNSIGNED, ID_AA64ZFR0_EL1_SVEver_SVE2, CAP_HWCAP, KERNEL_HWCAP_SVE2),
HWCAP_CAP(SYS_ID_AA64ZFR0_EL1, ID_AA64ZFR0_EL1_AES_SHIFT, 4, FTR_UNSIGNED, ID_AA64ZFR0_EL1_AES_IMP, CAP_HWCAP, KERNEL_HWCAP_SVEAES),
HWCAP_CAP(SYS_ID_AA64ZFR0_EL1, ID_AA64ZFR0_EL1_AES_SHIFT, 4, FTR_UNSIGNED, ID_AA64ZFR0_EL1_AES_PMULL128, CAP_HWCAP, KERNEL_HWCAP_SVEPMULL),
HWCAP_CAP(SYS_ID_AA64ZFR0_EL1, ID_AA64ZFR0_EL1_BitPerm_SHIFT, 4, FTR_UNSIGNED, ID_AA64ZFR0_EL1_BitPerm_IMP, CAP_HWCAP, KERNEL_HWCAP_SVEBITPERM),
HWCAP_CAP(SYS_ID_AA64ZFR0_EL1, ID_AA64ZFR0_EL1_BF16_SHIFT, 4, FTR_UNSIGNED, ID_AA64ZFR0_EL1_BF16_IMP, CAP_HWCAP, KERNEL_HWCAP_SVEBF16),
+ HWCAP_CAP(SYS_ID_AA64ZFR0_EL1, ID_AA64ZFR0_EL1_BF16_SHIFT, 4, FTR_UNSIGNED, ID_AA64ZFR0_EL1_BF16_EBF16, CAP_HWCAP, KERNEL_HWCAP_SVE_EBF16),
HWCAP_CAP(SYS_ID_AA64ZFR0_EL1, ID_AA64ZFR0_EL1_SHA3_SHIFT, 4, FTR_UNSIGNED, ID_AA64ZFR0_EL1_SHA3_IMP, CAP_HWCAP, KERNEL_HWCAP_SVESHA3),
HWCAP_CAP(SYS_ID_AA64ZFR0_EL1, ID_AA64ZFR0_EL1_SM4_SHIFT, 4, FTR_UNSIGNED, ID_AA64ZFR0_EL1_SM4_IMP, CAP_HWCAP, KERNEL_HWCAP_SVESM4),
HWCAP_CAP(SYS_ID_AA64ZFR0_EL1, ID_AA64ZFR0_EL1_I8MM_SHIFT, 4, FTR_UNSIGNED, ID_AA64ZFR0_EL1_I8MM_IMP, CAP_HWCAP, KERNEL_HWCAP_SVEI8MM),
HWCAP_CAP(SYS_ID_AA64ZFR0_EL1, ID_AA64ZFR0_EL1_F32MM_SHIFT, 4, FTR_UNSIGNED, ID_AA64ZFR0_EL1_F32MM_IMP, CAP_HWCAP, KERNEL_HWCAP_SVEF32MM),
HWCAP_CAP(SYS_ID_AA64ZFR0_EL1, ID_AA64ZFR0_EL1_F64MM_SHIFT, 4, FTR_UNSIGNED, ID_AA64ZFR0_EL1_F64MM_IMP, CAP_HWCAP, KERNEL_HWCAP_SVEF64MM),
#endif
- HWCAP_CAP(SYS_ID_AA64PFR1_EL1, ID_AA64PFR1_SSBS_SHIFT, 4, FTR_UNSIGNED, ID_AA64PFR1_SSBS_PSTATE_INSNS, CAP_HWCAP, KERNEL_HWCAP_SSBS),
+ HWCAP_CAP(SYS_ID_AA64PFR1_EL1, ID_AA64PFR1_EL1_SSBS_SHIFT, 4, FTR_UNSIGNED, ID_AA64PFR1_EL1_SSBS_SSBS2, CAP_HWCAP, KERNEL_HWCAP_SSBS),
#ifdef CONFIG_ARM64_BTI
- HWCAP_CAP(SYS_ID_AA64PFR1_EL1, ID_AA64PFR1_BT_SHIFT, 4, FTR_UNSIGNED, ID_AA64PFR1_BT_BTI, CAP_HWCAP, KERNEL_HWCAP_BTI),
+ HWCAP_CAP(SYS_ID_AA64PFR1_EL1, ID_AA64PFR1_EL1_BT_SHIFT, 4, FTR_UNSIGNED, ID_AA64PFR1_EL1_BT_IMP, CAP_HWCAP, KERNEL_HWCAP_BTI),
#endif
#ifdef CONFIG_ARM64_PTR_AUTH
HWCAP_MULTI_CAP(ptr_auth_hwcap_addr_matches, CAP_HWCAP, KERNEL_HWCAP_PACA),
HWCAP_MULTI_CAP(ptr_auth_hwcap_gen_matches, CAP_HWCAP, KERNEL_HWCAP_PACG),
#endif
#ifdef CONFIG_ARM64_MTE
- HWCAP_CAP(SYS_ID_AA64PFR1_EL1, ID_AA64PFR1_MTE_SHIFT, 4, FTR_UNSIGNED, ID_AA64PFR1_MTE, CAP_HWCAP, KERNEL_HWCAP_MTE),
- HWCAP_CAP(SYS_ID_AA64PFR1_EL1, ID_AA64PFR1_MTE_SHIFT, 4, FTR_UNSIGNED, ID_AA64PFR1_MTE_ASYMM, CAP_HWCAP, KERNEL_HWCAP_MTE3),
+ HWCAP_CAP(SYS_ID_AA64PFR1_EL1, ID_AA64PFR1_EL1_MTE_SHIFT, 4, FTR_UNSIGNED, ID_AA64PFR1_EL1_MTE_MTE2, CAP_HWCAP, KERNEL_HWCAP_MTE),
+ HWCAP_CAP(SYS_ID_AA64PFR1_EL1, ID_AA64PFR1_EL1_MTE_SHIFT, 4, FTR_UNSIGNED, ID_AA64PFR1_EL1_MTE_MTE3, CAP_HWCAP, KERNEL_HWCAP_MTE3),
#endif /* CONFIG_ARM64_MTE */
- HWCAP_CAP(SYS_ID_AA64MMFR0_EL1, ID_AA64MMFR0_ECV_SHIFT, 4, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_ECV),
- HWCAP_CAP(SYS_ID_AA64MMFR1_EL1, ID_AA64MMFR1_AFP_SHIFT, 4, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_AFP),
+ HWCAP_CAP(SYS_ID_AA64MMFR0_EL1, ID_AA64MMFR0_EL1_ECV_SHIFT, 4, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_ECV),
+ HWCAP_CAP(SYS_ID_AA64MMFR1_EL1, ID_AA64MMFR1_EL1_AFP_SHIFT, 4, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_AFP),
HWCAP_CAP(SYS_ID_AA64ISAR2_EL1, ID_AA64ISAR2_EL1_RPRES_SHIFT, 4, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_RPRES),
HWCAP_CAP(SYS_ID_AA64ISAR2_EL1, ID_AA64ISAR2_EL1_WFxT_SHIFT, 4, FTR_UNSIGNED, ID_AA64ISAR2_EL1_WFxT_IMP, CAP_HWCAP, KERNEL_HWCAP_WFXT),
#ifdef CONFIG_ARM64_SME
- HWCAP_CAP(SYS_ID_AA64PFR1_EL1, ID_AA64PFR1_SME_SHIFT, 4, FTR_UNSIGNED, ID_AA64PFR1_SME, CAP_HWCAP, KERNEL_HWCAP_SME),
+ HWCAP_CAP(SYS_ID_AA64PFR1_EL1, ID_AA64PFR1_EL1_SME_SHIFT, 4, FTR_UNSIGNED, ID_AA64PFR1_EL1_SME_IMP, CAP_HWCAP, KERNEL_HWCAP_SME),
HWCAP_CAP(SYS_ID_AA64SMFR0_EL1, ID_AA64SMFR0_EL1_FA64_SHIFT, 1, FTR_UNSIGNED, ID_AA64SMFR0_EL1_FA64_IMP, CAP_HWCAP, KERNEL_HWCAP_SME_FA64),
HWCAP_CAP(SYS_ID_AA64SMFR0_EL1, ID_AA64SMFR0_EL1_I16I64_SHIFT, 4, FTR_UNSIGNED, ID_AA64SMFR0_EL1_I16I64_IMP, CAP_HWCAP, KERNEL_HWCAP_SME_I16I64),
HWCAP_CAP(SYS_ID_AA64SMFR0_EL1, ID_AA64SMFR0_EL1_F64F64_SHIFT, 1, FTR_UNSIGNED, ID_AA64SMFR0_EL1_F64F64_IMP, CAP_HWCAP, KERNEL_HWCAP_SME_F64F64),
@@ -2929,9 +2950,6 @@ static void __init enable_cpu_capabilities(u16 scope_mask)
if (!cpus_have_cap(num))
continue;
- /* Ensure cpus_have_const_cap(num) works */
- static_branch_enable(&cpu_hwcap_keys[num]);
-
if (boot_scope && caps->cpu_enable)
/*
* Capabilities with SCOPE_BOOT_CPU scope are finalised
@@ -3102,7 +3120,7 @@ static void verify_hyp_capabilities(void)
/* Verify IPA range */
parange = cpuid_feature_extract_unsigned_field(mmfr0,
- ID_AA64MMFR0_PARANGE_SHIFT);
+ ID_AA64MMFR0_EL1_PARANGE_SHIFT);
ipa_max = id_aa64mmfr0_parange_to_phys_shift(parange);
if (ipa_max < get_kvm_ipa_limit()) {
pr_crit("CPU%d: IPA range mismatch\n", smp_processor_id());
@@ -3253,9 +3271,6 @@ void __init setup_cpu_features(void)
sme_setup();
minsigstksz_setup();
- /* Advertise that we have computed the system capabilities */
- finalize_system_capabilities();
-
/*
* Check for sane CTR_EL0.CWG value.
*/
diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c
index d7702f39b4d3..28d4f442b0bc 100644
--- a/arch/arm64/kernel/cpuinfo.c
+++ b/arch/arm64/kernel/cpuinfo.c
@@ -115,6 +115,7 @@ static const char *const hwcap_str[] = {
[KERNEL_HWCAP_SME_FA64] = "smefa64",
[KERNEL_HWCAP_WFXT] = "wfxt",
[KERNEL_HWCAP_EBF16] = "ebf16",
+ [KERNEL_HWCAP_SVE_EBF16] = "sveebf16",
};
#ifdef CONFIG_COMPAT
diff --git a/arch/arm64/kernel/debug-monitors.c b/arch/arm64/kernel/debug-monitors.c
index bf9fe71589bc..3da09778267e 100644
--- a/arch/arm64/kernel/debug-monitors.c
+++ b/arch/arm64/kernel/debug-monitors.c
@@ -28,7 +28,7 @@
u8 debug_monitors_arch(void)
{
return cpuid_feature_extract_unsigned_field(read_sanitised_ftr_reg(SYS_ID_AA64DFR0_EL1),
- ID_AA64DFR0_DEBUGVER_SHIFT);
+ ID_AA64DFR0_EL1_DebugVer_SHIFT);
}
/*
diff --git a/arch/arm64/kernel/entry-common.c b/arch/arm64/kernel/entry-common.c
index c75ca36b4a49..9173fad279af 100644
--- a/arch/arm64/kernel/entry-common.c
+++ b/arch/arm64/kernel/entry-common.c
@@ -379,11 +379,20 @@ static void noinstr el1_pc(struct pt_regs *regs, unsigned long esr)
exit_to_kernel_mode(regs);
}
-static void noinstr el1_undef(struct pt_regs *regs)
+static void noinstr el1_undef(struct pt_regs *regs, unsigned long esr)
{
enter_from_kernel_mode(regs);
local_daif_inherit(regs);
- do_undefinstr(regs);
+ do_undefinstr(regs, esr);
+ local_daif_mask();
+ exit_to_kernel_mode(regs);
+}
+
+static void noinstr el1_bti(struct pt_regs *regs, unsigned long esr)
+{
+ enter_from_kernel_mode(regs);
+ local_daif_inherit(regs);
+ do_el1_bti(regs, esr);
local_daif_mask();
exit_to_kernel_mode(regs);
}
@@ -402,7 +411,7 @@ static void noinstr el1_fpac(struct pt_regs *regs, unsigned long esr)
{
enter_from_kernel_mode(regs);
local_daif_inherit(regs);
- do_ptrauth_fault(regs, esr);
+ do_el1_fpac(regs, esr);
local_daif_mask();
exit_to_kernel_mode(regs);
}
@@ -425,7 +434,10 @@ asmlinkage void noinstr el1h_64_sync_handler(struct pt_regs *regs)
break;
case ESR_ELx_EC_SYS64:
case ESR_ELx_EC_UNKNOWN:
- el1_undef(regs);
+ el1_undef(regs, esr);
+ break;
+ case ESR_ELx_EC_BTI:
+ el1_bti(regs, esr);
break;
case ESR_ELx_EC_BREAKPT_CUR:
case ESR_ELx_EC_SOFTSTP_CUR:
@@ -582,11 +594,11 @@ static void noinstr el0_sp(struct pt_regs *regs, unsigned long esr)
exit_to_user_mode(regs);
}
-static void noinstr el0_undef(struct pt_regs *regs)
+static void noinstr el0_undef(struct pt_regs *regs, unsigned long esr)
{
enter_from_user_mode(regs);
local_daif_restore(DAIF_PROCCTX);
- do_undefinstr(regs);
+ do_undefinstr(regs, esr);
exit_to_user_mode(regs);
}
@@ -594,7 +606,7 @@ static void noinstr el0_bti(struct pt_regs *regs)
{
enter_from_user_mode(regs);
local_daif_restore(DAIF_PROCCTX);
- do_bti(regs);
+ do_el0_bti(regs);
exit_to_user_mode(regs);
}
@@ -629,7 +641,7 @@ static void noinstr el0_fpac(struct pt_regs *regs, unsigned long esr)
{
enter_from_user_mode(regs);
local_daif_restore(DAIF_PROCCTX);
- do_ptrauth_fault(regs, esr);
+ do_el0_fpac(regs, esr);
exit_to_user_mode(regs);
}
@@ -670,7 +682,7 @@ asmlinkage void noinstr el0t_64_sync_handler(struct pt_regs *regs)
el0_pc(regs, esr);
break;
case ESR_ELx_EC_UNKNOWN:
- el0_undef(regs);
+ el0_undef(regs, esr);
break;
case ESR_ELx_EC_BTI:
el0_bti(regs);
@@ -788,7 +800,7 @@ asmlinkage void noinstr el0t_32_sync_handler(struct pt_regs *regs)
case ESR_ELx_EC_CP14_MR:
case ESR_ELx_EC_CP14_LS:
case ESR_ELx_EC_CP14_64:
- el0_undef(regs);
+ el0_undef(regs, esr);
break;
case ESR_ELx_EC_CP15_32:
case ESR_ELx_EC_CP15_64:
diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index 2d73b3e793b2..e28137d64b76 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -114,7 +114,7 @@
* them if required.
*/
.macro apply_ssbd, state, tmp1, tmp2
-alternative_cb spectre_v4_patch_fw_mitigation_enable
+alternative_cb ARM64_ALWAYS_SYSTEM, spectre_v4_patch_fw_mitigation_enable
b .L__asm_ssbd_skip\@ // Patched to NOP
alternative_cb_end
ldr_this_cpu \tmp2, arm64_ssbd_callback_required, \tmp1
@@ -123,7 +123,7 @@ alternative_cb_end
tbnz \tmp2, #TIF_SSBD, .L__asm_ssbd_skip\@
mov w0, #ARM_SMCCC_ARCH_WORKAROUND_2
mov w1, #\state
-alternative_cb smccc_patch_fw_mitigation_conduit
+alternative_cb ARM64_ALWAYS_SYSTEM, smccc_patch_fw_mitigation_conduit
nop // Patched to SMC/HVC #0
alternative_cb_end
.L__asm_ssbd_skip\@:
@@ -175,7 +175,7 @@ alternative_else_nop_endif
.macro mte_set_kernel_gcr, tmp, tmp2
#ifdef CONFIG_KASAN_HW_TAGS
-alternative_cb kasan_hw_tags_enable
+alternative_cb ARM64_ALWAYS_SYSTEM, kasan_hw_tags_enable
b 1f
alternative_cb_end
mov \tmp, KERNEL_GCR_EL1
@@ -186,7 +186,7 @@ alternative_cb_end
.macro mte_set_user_gcr, tsk, tmp, tmp2
#ifdef CONFIG_KASAN_HW_TAGS
-alternative_cb kasan_hw_tags_enable
+alternative_cb ARM64_ALWAYS_SYSTEM, kasan_hw_tags_enable
b 1f
alternative_cb_end
ldr \tmp, [\tsk, #THREAD_MTE_CTRL]
diff --git a/arch/arm64/kernel/ftrace.c b/arch/arm64/kernel/ftrace.c
index 26789865748c..8745175f4a75 100644
--- a/arch/arm64/kernel/ftrace.c
+++ b/arch/arm64/kernel/ftrace.c
@@ -217,11 +217,26 @@ int ftrace_make_nop(struct module *mod, struct dyn_ftrace *rec,
unsigned long pc = rec->ip;
u32 old = 0, new;
+ new = aarch64_insn_gen_nop();
+
+ /*
+ * When using mcount, callsites in modules may have been initalized to
+ * call an arbitrary module PLT (which redirects to the _mcount stub)
+ * rather than the ftrace PLT we'll use at runtime (which redirects to
+ * the ftrace trampoline). We can ignore the old PLT when initializing
+ * the callsite.
+ *
+ * Note: 'mod' is only set at module load time.
+ */
+ if (!IS_ENABLED(CONFIG_DYNAMIC_FTRACE_WITH_REGS) &&
+ IS_ENABLED(CONFIG_ARM64_MODULE_PLTS) && mod) {
+ return aarch64_insn_patch_text_nosync((void *)pc, new);
+ }
+
if (!ftrace_find_callable_addr(rec, mod, &addr))
return -EINVAL;
old = aarch64_insn_gen_branch_imm(pc, addr, AARCH64_INSN_BRANCH_LINK);
- new = aarch64_insn_gen_nop();
return ftrace_modify_code(pc, old, new, true);
}
diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
index 814b6587ccb7..2196aad7b55b 100644
--- a/arch/arm64/kernel/head.S
+++ b/arch/arm64/kernel/head.S
@@ -99,7 +99,7 @@ SYM_CODE_START(primary_entry)
*/
#if VA_BITS > 48
mrs_s x0, SYS_ID_AA64MMFR2_EL1
- tst x0, #0xf << ID_AA64MMFR2_LVA_SHIFT
+ tst x0, #0xf << ID_AA64MMFR2_EL1_VARange_SHIFT
mov x0, #VA_BITS
mov x25, #VA_BITS_MIN
csel x25, x25, x0, eq
@@ -658,10 +658,10 @@ SYM_FUNC_END(__secondary_too_slow)
*/
SYM_FUNC_START(__enable_mmu)
mrs x3, ID_AA64MMFR0_EL1
- ubfx x3, x3, #ID_AA64MMFR0_TGRAN_SHIFT, 4
- cmp x3, #ID_AA64MMFR0_TGRAN_SUPPORTED_MIN
+ ubfx x3, x3, #ID_AA64MMFR0_EL1_TGRAN_SHIFT, 4
+ cmp x3, #ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MIN
b.lt __no_granule_support
- cmp x3, #ID_AA64MMFR0_TGRAN_SUPPORTED_MAX
+ cmp x3, #ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MAX
b.gt __no_granule_support
phys_to_ttbr x2, x2
msr ttbr0_el1, x2 // load TTBR0
@@ -679,7 +679,7 @@ SYM_FUNC_START(__cpu_secondary_check52bitva)
b.ne 2f
mrs_s x0, SYS_ID_AA64MMFR2_EL1
- and x0, x0, #(0xf << ID_AA64MMFR2_LVA_SHIFT)
+ and x0, x0, #(0xf << ID_AA64MMFR2_EL1_VARange_SHIFT)
cbnz x0, 2f
update_early_cpu_boot_status \
diff --git a/arch/arm64/kernel/hyp-stub.S b/arch/arm64/kernel/hyp-stub.S
index 12c7fad02ae5..2ee18c860f2a 100644
--- a/arch/arm64/kernel/hyp-stub.S
+++ b/arch/arm64/kernel/hyp-stub.S
@@ -98,7 +98,7 @@ SYM_CODE_START_LOCAL(elx_sync)
SYM_CODE_END(elx_sync)
SYM_CODE_START_LOCAL(__finalise_el2)
- check_override id_aa64pfr0 ID_AA64PFR0_SVE_SHIFT .Linit_sve .Lskip_sve
+ check_override id_aa64pfr0 ID_AA64PFR0_EL1_SVE_SHIFT .Linit_sve .Lskip_sve
.Linit_sve: /* SVE register access */
mrs x0, cptr_el2 // Disable SVE traps
@@ -109,7 +109,7 @@ SYM_CODE_START_LOCAL(__finalise_el2)
msr_s SYS_ZCR_EL2, x1 // length for EL1.
.Lskip_sve:
- check_override id_aa64pfr1 ID_AA64PFR1_SME_SHIFT .Linit_sme .Lskip_sme
+ check_override id_aa64pfr1 ID_AA64PFR1_EL1_SME_SHIFT .Linit_sme .Lskip_sme
.Linit_sme: /* SME register access and priority mapping */
mrs x0, cptr_el2 // Disable SME traps
@@ -142,7 +142,7 @@ SYM_CODE_START_LOCAL(__finalise_el2)
msr_s SYS_SMPRIMAP_EL2, xzr // Make all priorities equal
mrs x1, id_aa64mmfr1_el1 // HCRX_EL2 present?
- ubfx x1, x1, #ID_AA64MMFR1_HCX_SHIFT, #4
+ ubfx x1, x1, #ID_AA64MMFR1_EL1_HCX_SHIFT, #4
cbz x1, .Lskip_sme
mrs_s x1, SYS_HCRX_EL2
@@ -157,7 +157,7 @@ SYM_CODE_START_LOCAL(__finalise_el2)
tbnz x1, #0, 1f
// Needs to be VHE capable, obviously
- check_override id_aa64mmfr1 ID_AA64MMFR1_VHE_SHIFT 2f 1f
+ check_override id_aa64mmfr1 ID_AA64MMFR1_EL1_VH_SHIFT 2f 1f
1: mov_q x0, HVC_STUB_ERR
eret
diff --git a/arch/arm64/kernel/idreg-override.c b/arch/arm64/kernel/idreg-override.c
index 1b0542c69738..95133765ed29 100644
--- a/arch/arm64/kernel/idreg-override.c
+++ b/arch/arm64/kernel/idreg-override.c
@@ -50,7 +50,7 @@ static const struct ftr_set_desc mmfr1 __initconst = {
.name = "id_aa64mmfr1",
.override = &id_aa64mmfr1_override,
.fields = {
- FIELD("vh", ID_AA64MMFR1_VHE_SHIFT, mmfr1_vh_filter),
+ FIELD("vh", ID_AA64MMFR1_EL1_VH_SHIFT, mmfr1_vh_filter),
{}
},
};
@@ -74,7 +74,7 @@ static const struct ftr_set_desc pfr0 __initconst = {
.name = "id_aa64pfr0",
.override = &id_aa64pfr0_override,
.fields = {
- FIELD("sve", ID_AA64PFR0_SVE_SHIFT, pfr0_sve_filter),
+ FIELD("sve", ID_AA64PFR0_EL1_SVE_SHIFT, pfr0_sve_filter),
{}
},
};
@@ -98,9 +98,9 @@ static const struct ftr_set_desc pfr1 __initconst = {
.name = "id_aa64pfr1",
.override = &id_aa64pfr1_override,
.fields = {
- FIELD("bt", ID_AA64PFR1_BT_SHIFT, NULL ),
- FIELD("mte", ID_AA64PFR1_MTE_SHIFT, NULL),
- FIELD("sme", ID_AA64PFR1_SME_SHIFT, pfr1_sme_filter),
+ FIELD("bt", ID_AA64PFR1_EL1_BT_SHIFT, NULL ),
+ FIELD("mte", ID_AA64PFR1_EL1_MTE_SHIFT, NULL),
+ FIELD("sme", ID_AA64PFR1_EL1_SME_SHIFT, pfr1_sme_filter),
{}
},
};
diff --git a/arch/arm64/kernel/image-vars.h b/arch/arm64/kernel/image-vars.h
index afa69e04e75e..4aaa5f3d1f65 100644
--- a/arch/arm64/kernel/image-vars.h
+++ b/arch/arm64/kernel/image-vars.h
@@ -73,6 +73,7 @@ KVM_NVHE_ALIAS(spectre_bhb_patch_loop_iter);
KVM_NVHE_ALIAS(spectre_bhb_patch_loop_mitigation_enable);
KVM_NVHE_ALIAS(spectre_bhb_patch_wa3);
KVM_NVHE_ALIAS(spectre_bhb_patch_clearbhb);
+KVM_NVHE_ALIAS(alt_cb_patch_nops);
/* Global kernel state accessed by nVHE hyp code. */
KVM_NVHE_ALIAS(kvm_vgic_global_state);
@@ -89,10 +90,6 @@ KVM_NVHE_ALIAS(__icache_flags);
/* VMID bits set by the KVM VMID allocator */
KVM_NVHE_ALIAS(kvm_arm_vmid_bits);
-/* Kernel symbols needed for cpus_have_final/const_caps checks. */
-KVM_NVHE_ALIAS(arm64_const_caps_ready);
-KVM_NVHE_ALIAS(cpu_hwcap_keys);
-
/* Static keys which are set if a vGIC trap should be handled in hyp. */
KVM_NVHE_ALIAS(vgic_v2_cpuif_trap);
KVM_NVHE_ALIAS(vgic_v3_cpuif_trap);
diff --git a/arch/arm64/kernel/irq.c b/arch/arm64/kernel/irq.c
index bda49430c9ea..38dbd3828f13 100644
--- a/arch/arm64/kernel/irq.c
+++ b/arch/arm64/kernel/irq.c
@@ -21,7 +21,9 @@
#include <linux/seq_file.h>
#include <linux/vmalloc.h>
#include <asm/daifflags.h>
+#include <asm/exception.h>
#include <asm/vmap_stack.h>
+#include <asm/softirq_stack.h>
/* Only access this in an NMI enter/exit */
DEFINE_PER_CPU(struct nmi_ctx, nmi_contexts);
@@ -71,6 +73,18 @@ static void init_irq_stacks(void)
}
#endif
+#ifndef CONFIG_PREEMPT_RT
+static void ____do_softirq(struct pt_regs *regs)
+{
+ __do_softirq();
+}
+
+void do_softirq_own_stack(void)
+{
+ call_on_irq_stack(NULL, ____do_softirq);
+}
+#endif
+
static void default_handle_irq(struct pt_regs *regs)
{
panic("IRQ taken without a root IRQ handler\n");
diff --git a/arch/arm64/kernel/module-plts.c b/arch/arm64/kernel/module-plts.c
index a3d0494f25a9..5a0a8f552a61 100644
--- a/arch/arm64/kernel/module-plts.c
+++ b/arch/arm64/kernel/module-plts.c
@@ -37,7 +37,8 @@ struct plt_entry get_plt_entry(u64 dst, void *pc)
return plt;
}
-bool plt_entries_equal(const struct plt_entry *a, const struct plt_entry *b)
+static bool plt_entries_equal(const struct plt_entry *a,
+ const struct plt_entry *b)
{
u64 p, q;
diff --git a/arch/arm64/kernel/module.c b/arch/arm64/kernel/module.c
index f2d4bb14bfab..76b41e4ca9fa 100644
--- a/arch/arm64/kernel/module.c
+++ b/arch/arm64/kernel/module.c
@@ -476,21 +476,6 @@ overflow:
return -ENOEXEC;
}
-static const Elf_Shdr *find_section(const Elf_Ehdr *hdr,
- const Elf_Shdr *sechdrs,
- const char *name)
-{
- const Elf_Shdr *s, *se;
- const char *secstrs = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
-
- for (s = sechdrs, se = sechdrs + hdr->e_shnum; s < se; s++) {
- if (strcmp(name, secstrs + s->sh_name) == 0)
- return s;
- }
-
- return NULL;
-}
-
static inline void __init_plt(struct plt_entry *plt, unsigned long addr)
{
*plt = get_plt_entry(addr, plt);
diff --git a/arch/arm64/kernel/mte.c b/arch/arm64/kernel/mte.c
index b2b730233274..aca88470fb69 100644
--- a/arch/arm64/kernel/mte.c
+++ b/arch/arm64/kernel/mte.c
@@ -285,6 +285,49 @@ void mte_thread_switch(struct task_struct *next)
mte_check_tfsr_el1();
}
+void mte_cpu_setup(void)
+{
+ u64 rgsr;
+
+ /*
+ * CnP must be enabled only after the MAIR_EL1 register has been set
+ * up. Inconsistent MAIR_EL1 between CPUs sharing the same TLB may
+ * lead to the wrong memory type being used for a brief window during
+ * CPU power-up.
+ *
+ * CnP is not a boot feature so MTE gets enabled before CnP, but let's
+ * make sure that is the case.
+ */
+ BUG_ON(read_sysreg(ttbr0_el1) & TTBR_CNP_BIT);
+ BUG_ON(read_sysreg(ttbr1_el1) & TTBR_CNP_BIT);
+
+ /* Normal Tagged memory type at the corresponding MAIR index */
+ sysreg_clear_set(mair_el1,
+ MAIR_ATTRIDX(MAIR_ATTR_MASK, MT_NORMAL_TAGGED),
+ MAIR_ATTRIDX(MAIR_ATTR_NORMAL_TAGGED,
+ MT_NORMAL_TAGGED));
+
+ write_sysreg_s(KERNEL_GCR_EL1, SYS_GCR_EL1);
+
+ /*
+ * If GCR_EL1.RRND=1 is implemented the same way as RRND=0, then
+ * RGSR_EL1.SEED must be non-zero for IRG to produce
+ * pseudorandom numbers. As RGSR_EL1 is UNKNOWN out of reset, we
+ * must initialize it.
+ */
+ rgsr = (read_sysreg(CNTVCT_EL0) & SYS_RGSR_EL1_SEED_MASK) <<
+ SYS_RGSR_EL1_SEED_SHIFT;
+ if (rgsr == 0)
+ rgsr = 1 << SYS_RGSR_EL1_SEED_SHIFT;
+ write_sysreg_s(rgsr, SYS_RGSR_EL1);
+
+ /* clear any pending tag check faults in TFSR*_EL1 */
+ write_sysreg_s(0, SYS_TFSR_EL1);
+ write_sysreg_s(0, SYS_TFSRE0_EL1);
+
+ local_flush_tlb_all();
+}
+
void mte_suspend_enter(void)
{
if (!system_supports_mte())
@@ -301,6 +344,14 @@ void mte_suspend_enter(void)
mte_check_tfsr_el1();
}
+void mte_suspend_exit(void)
+{
+ if (!system_supports_mte())
+ return;
+
+ mte_cpu_setup();
+}
+
long set_mte_ctrl(struct task_struct *task, unsigned long arg)
{
u64 mte_ctrl = (~((arg & PR_MTE_TAG_MASK) >> PR_MTE_TAG_SHIFT) &
diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index cb69ff1e6138..7b0643fe2f13 100644
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -390,7 +390,7 @@ static const struct attribute_group armv8_pmuv3_caps_attr_group = {
*/
static bool armv8pmu_has_long_event(struct arm_pmu *cpu_pmu)
{
- return (cpu_pmu->pmuver >= ID_AA64DFR0_PMUVER_8_5);
+ return (cpu_pmu->pmuver >= ID_AA64DFR0_EL1_PMUVer_V3P5);
}
static inline bool armv8pmu_event_has_user_read(struct perf_event *event)
@@ -1145,8 +1145,8 @@ static void __armv8pmu_probe_pmu(void *info)
dfr0 = read_sysreg(id_aa64dfr0_el1);
pmuver = cpuid_feature_extract_unsigned_field(dfr0,
- ID_AA64DFR0_PMUVER_SHIFT);
- if (pmuver == ID_AA64DFR0_PMUVER_IMP_DEF || pmuver == 0)
+ ID_AA64DFR0_EL1_PMUVer_SHIFT);
+ if (pmuver == ID_AA64DFR0_EL1_PMUVer_IMP_DEF || pmuver == 0)
return;
cpu_pmu->pmuver = pmuver;
@@ -1172,7 +1172,7 @@ static void __armv8pmu_probe_pmu(void *info)
pmceid, ARMV8_PMUV3_MAX_COMMON_EVENTS);
/* store PMMIR_EL1 register for sysfs */
- if (pmuver >= ID_AA64DFR0_PMUVER_8_4 && (pmceid_raw[1] & BIT(31)))
+ if (pmuver >= ID_AA64DFR0_EL1_PMUVer_V3P4 && (pmceid_raw[1] & BIT(31)))
cpu_pmu->reg_pmmir = read_cpuid(PMMIR_EL1);
else
cpu_pmu->reg_pmmir = 0;
diff --git a/arch/arm64/kernel/perf_regs.c b/arch/arm64/kernel/perf_regs.c
index f6f58e6265df..b4eece3eb17d 100644
--- a/arch/arm64/kernel/perf_regs.c
+++ b/arch/arm64/kernel/perf_regs.c
@@ -9,9 +9,27 @@
#include <asm/perf_regs.h>
#include <asm/ptrace.h>
+static u64 perf_ext_regs_value(int idx)
+{
+ switch (idx) {
+ case PERF_REG_ARM64_VG:
+ if (WARN_ON_ONCE(!system_supports_sve()))
+ return 0;
+
+ /*
+ * Vector granule is current length in bits of SVE registers
+ * divided by 64.
+ */
+ return (task_get_sve_vl(current) * 8) / 64;
+ default:
+ WARN_ON_ONCE(true);
+ return 0;
+ }
+}
+
u64 perf_reg_value(struct pt_regs *regs, int idx)
{
- if (WARN_ON_ONCE((u32)idx >= PERF_REG_ARM64_MAX))
+ if (WARN_ON_ONCE((u32)idx >= PERF_REG_ARM64_EXTENDED_MAX))
return 0;
/*
@@ -51,6 +69,9 @@ u64 perf_reg_value(struct pt_regs *regs, int idx)
if ((u32)idx == PERF_REG_ARM64_PC)
return regs->pc;
+ if ((u32)idx >= PERF_REG_ARM64_MAX)
+ return perf_ext_regs_value(idx);
+
return regs->regs[idx];
}
@@ -58,7 +79,12 @@ u64 perf_reg_value(struct pt_regs *regs, int idx)
int perf_reg_validate(u64 mask)
{
- if (!mask || mask & REG_RESERVED)
+ u64 reserved_mask = REG_RESERVED;
+
+ if (system_supports_sve())
+ reserved_mask &= ~(1ULL << PERF_REG_ARM64_VG);
+
+ if (!mask || mask & reserved_mask)
return -EINVAL;
return 0;
diff --git a/arch/arm64/kernel/probes/kprobes.c b/arch/arm64/kernel/probes/kprobes.c
index d1d182320245..c9e4d0720285 100644
--- a/arch/arm64/kernel/probes/kprobes.c
+++ b/arch/arm64/kernel/probes/kprobes.c
@@ -44,13 +44,28 @@ post_kprobe_handler(struct kprobe *, struct kprobe_ctlblk *, struct pt_regs *);
static void __kprobes arch_prepare_ss_slot(struct kprobe *p)
{
kprobe_opcode_t *addr = p->ainsn.api.insn;
- void *addrs[] = {addr, addr + 1};
- u32 insns[] = {p->opcode, BRK64_OPCODE_KPROBES_SS};
- /* prepare insn slot */
- aarch64_insn_patch_text(addrs, insns, 2);
-
- flush_icache_range((uintptr_t)addr, (uintptr_t)(addr + MAX_INSN_SIZE));
+ /*
+ * Prepare insn slot, Mark Rutland points out it depends on a coupe of
+ * subtleties:
+ *
+ * - That the I-cache maintenance for these instructions is complete
+ * *before* the kprobe BRK is written (and aarch64_insn_patch_text_nosync()
+ * ensures this, but just omits causing a Context-Synchronization-Event
+ * on all CPUS).
+ *
+ * - That the kprobe BRK results in an exception (and consequently a
+ * Context-Synchronoization-Event), which ensures that the CPU will
+ * fetch thesingle-step slot instructions *after* this, ensuring that
+ * the new instructions are used
+ *
+ * It supposes to place ISB after patching to guarantee I-cache maintenance
+ * is observed on all CPUS, however, single-step slot is installed in
+ * the BRK exception handler, so it is unnecessary to generate
+ * Contex-Synchronization-Event via ISB again.
+ */
+ aarch64_insn_patch_text_nosync(addr, p->opcode);
+ aarch64_insn_patch_text_nosync(addr + 1, BRK64_OPCODE_KPROBES_SS);
/*
* Needs restoring of return address after stepping xol.
diff --git a/arch/arm64/kernel/proton-pack.c b/arch/arm64/kernel/proton-pack.c
index 40be3a7c2c53..a8ea1637b137 100644
--- a/arch/arm64/kernel/proton-pack.c
+++ b/arch/arm64/kernel/proton-pack.c
@@ -168,7 +168,7 @@ static enum mitigation_state spectre_v2_get_cpu_hw_mitigation_state(void)
/* If the CPU has CSV2 set, we're safe */
pfr0 = read_cpuid(ID_AA64PFR0_EL1);
- if (cpuid_feature_extract_unsigned_field(pfr0, ID_AA64PFR0_CSV2_SHIFT))
+ if (cpuid_feature_extract_unsigned_field(pfr0, ID_AA64PFR0_EL1_CSV2_SHIFT))
return SPECTRE_UNAFFECTED;
/* Alternatively, we have a list of unaffected CPUs */
@@ -586,7 +586,7 @@ void __init spectre_v4_patch_fw_mitigation_enable(struct alt_instr *alt,
if (spectre_v4_mitigations_off())
return;
- if (cpus_have_final_cap(ARM64_SSBS))
+ if (cpus_have_cap(ARM64_SSBS))
return;
if (spectre_v4_mitigations_dynamic())
@@ -945,7 +945,7 @@ static bool supports_ecbhb(int scope)
mmfr1 = read_sanitised_ftr_reg(SYS_ID_AA64MMFR1_EL1);
return cpuid_feature_extract_unsigned_field(mmfr1,
- ID_AA64MMFR1_ECBHB_SHIFT);
+ ID_AA64MMFR1_EL1_ECBHB_SHIFT);
}
bool is_spectre_bhb_affected(const struct arm64_cpu_capabilities *entry,
@@ -988,6 +988,14 @@ static void this_cpu_set_vectors(enum arm64_bp_harden_el1_vectors slot)
isb();
}
+static bool __read_mostly __nospectre_bhb;
+static int __init parse_spectre_bhb_param(char *str)
+{
+ __nospectre_bhb = true;
+ return 0;
+}
+early_param("nospectre_bhb", parse_spectre_bhb_param);
+
void spectre_bhb_enable_mitigation(const struct arm64_cpu_capabilities *entry)
{
bp_hardening_cb_t cpu_cb;
@@ -1001,7 +1009,7 @@ void spectre_bhb_enable_mitigation(const struct arm64_cpu_capabilities *entry)
/* No point mitigating Spectre-BHB alone. */
} else if (!IS_ENABLED(CONFIG_MITIGATE_SPECTRE_BRANCH_HISTORY)) {
pr_info_once("spectre-bhb mitigation disabled by compile time option\n");
- } else if (cpu_mitigations_off()) {
+ } else if (cpu_mitigations_off() || __nospectre_bhb) {
pr_info_once("spectre-bhb mitigation disabled by command line option\n");
} else if (supports_ecbhb(SCOPE_LOCAL_CPU)) {
state = SPECTRE_MITIGATED;
diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
index 041d2ae5c30a..c2fb5755bbec 100644
--- a/arch/arm64/kernel/ptrace.c
+++ b/arch/arm64/kernel/ptrace.c
@@ -121,7 +121,7 @@ static bool regs_within_kernel_stack(struct pt_regs *regs, unsigned long addr)
{
return ((addr & ~(THREAD_SIZE - 1)) ==
(kernel_stack_pointer(regs) & ~(THREAD_SIZE - 1))) ||
- on_irq_stack(addr, sizeof(unsigned long), NULL);
+ on_irq_stack(addr, sizeof(unsigned long));
}
/**
@@ -666,10 +666,18 @@ static int fpr_set(struct task_struct *target, const struct user_regset *regset,
static int tls_get(struct task_struct *target, const struct user_regset *regset,
struct membuf to)
{
+ int ret;
+
if (target == current)
tls_preserve_current_state();
- return membuf_store(&to, target->thread.uw.tp_value);
+ ret = membuf_store(&to, target->thread.uw.tp_value);
+ if (system_supports_tpidr2())
+ ret = membuf_store(&to, target->thread.tpidr2_el0);
+ else
+ ret = membuf_zero(&to, sizeof(u64));
+
+ return ret;
}
static int tls_set(struct task_struct *target, const struct user_regset *regset,
@@ -677,13 +685,20 @@ static int tls_set(struct task_struct *target, const struct user_regset *regset,
const void *kbuf, const void __user *ubuf)
{
int ret;
- unsigned long tls = target->thread.uw.tp_value;
+ unsigned long tls[2];
- ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &tls, 0, -1);
+ tls[0] = target->thread.uw.tp_value;
+ if (system_supports_sme())
+ tls[1] = target->thread.tpidr2_el0;
+
+ ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, tls, 0, count);
if (ret)
return ret;
- target->thread.uw.tp_value = tls;
+ target->thread.uw.tp_value = tls[0];
+ if (system_supports_sme())
+ target->thread.tpidr2_el0 = tls[1];
+
return ret;
}
@@ -1390,7 +1405,7 @@ static const struct user_regset aarch64_regsets[] = {
},
[REGSET_TLS] = {
.core_note_type = NT_ARM_TLS,
- .n = 1,
+ .n = 2,
.size = sizeof(void *),
.align = sizeof(void *),
.regset_get = tls_get,
diff --git a/arch/arm64/kernel/reloc_test_core.c b/arch/arm64/kernel/reloc_test_core.c
index e87a2b7f20f6..99f2ffe9fc05 100644
--- a/arch/arm64/kernel/reloc_test_core.c
+++ b/arch/arm64/kernel/reloc_test_core.c
@@ -48,7 +48,7 @@ static struct {
{ "R_AARCH64_PREL16", relative_data16, (u64)&sym64_rel },
};
-static int reloc_test_init(void)
+static int __init reloc_test_init(void)
{
int i;
@@ -67,7 +67,7 @@ static int reloc_test_init(void)
return 0;
}
-static void reloc_test_exit(void)
+static void __exit reloc_test_exit(void)
{
}
diff --git a/arch/arm64/kernel/sdei.c b/arch/arm64/kernel/sdei.c
index d20620a1c51a..d56e170e1ca7 100644
--- a/arch/arm64/kernel/sdei.c
+++ b/arch/arm64/kernel/sdei.c
@@ -162,38 +162,6 @@ static int init_sdei_scs(void)
return err;
}
-static bool on_sdei_normal_stack(unsigned long sp, unsigned long size,
- struct stack_info *info)
-{
- unsigned long low = (unsigned long)raw_cpu_read(sdei_stack_normal_ptr);
- unsigned long high = low + SDEI_STACK_SIZE;
-
- return on_stack(sp, size, low, high, STACK_TYPE_SDEI_NORMAL, info);
-}
-
-static bool on_sdei_critical_stack(unsigned long sp, unsigned long size,
- struct stack_info *info)
-{
- unsigned long low = (unsigned long)raw_cpu_read(sdei_stack_critical_ptr);
- unsigned long high = low + SDEI_STACK_SIZE;
-
- return on_stack(sp, size, low, high, STACK_TYPE_SDEI_CRITICAL, info);
-}
-
-bool _on_sdei_stack(unsigned long sp, unsigned long size, struct stack_info *info)
-{
- if (!IS_ENABLED(CONFIG_VMAP_STACK))
- return false;
-
- if (on_sdei_critical_stack(sp, size, info))
- return true;
-
- if (on_sdei_normal_stack(sp, size, info))
- return true;
-
- return false;
-}
-
unsigned long sdei_arch_get_entry_point(int conduit)
{
/*
diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c
index ce190ee18a20..634279b3b03d 100644
--- a/arch/arm64/kernel/stacktrace.c
+++ b/arch/arm64/kernel/stacktrace.c
@@ -68,31 +68,6 @@ static inline void unwind_init_from_task(struct unwind_state *state,
}
/*
- * We can only safely access per-cpu stacks from current in a non-preemptible
- * context.
- */
-static bool on_accessible_stack(const struct task_struct *tsk,
- unsigned long sp, unsigned long size,
- struct stack_info *info)
-{
- if (info)
- info->type = STACK_TYPE_UNKNOWN;
-
- if (on_task_stack(tsk, sp, size, info))
- return true;
- if (tsk != current || preemptible())
- return false;
- if (on_irq_stack(sp, size, info))
- return true;
- if (on_overflow_stack(sp, size, info))
- return true;
- if (on_sdei_stack(sp, size, info))
- return true;
-
- return false;
-}
-
-/*
* Unwind from one frame record (A) to the next frame record (B).
*
* We terminate early if the location of B indicates a malformed chain of frame
@@ -103,14 +78,13 @@ static int notrace unwind_next(struct unwind_state *state)
{
struct task_struct *tsk = state->task;
unsigned long fp = state->fp;
- struct stack_info info;
int err;
/* Final frame; nothing to unwind */
if (fp == (unsigned long)task_pt_regs(tsk)->stackframe)
return -ENOENT;
- err = unwind_next_common(state, &info, on_accessible_stack, NULL);
+ err = unwind_next_frame_record(state);
if (err)
return err;
@@ -190,11 +164,47 @@ void show_stack(struct task_struct *tsk, unsigned long *sp, const char *loglvl)
barrier();
}
+/*
+ * Per-cpu stacks are only accessible when unwinding the current task in a
+ * non-preemptible context.
+ */
+#define STACKINFO_CPU(name) \
+ ({ \
+ ((task == current) && !preemptible()) \
+ ? stackinfo_get_##name() \
+ : stackinfo_get_unknown(); \
+ })
+
+/*
+ * SDEI stacks are only accessible when unwinding the current task in an NMI
+ * context.
+ */
+#define STACKINFO_SDEI(name) \
+ ({ \
+ ((task == current) && in_nmi()) \
+ ? stackinfo_get_sdei_##name() \
+ : stackinfo_get_unknown(); \
+ })
+
noinline notrace void arch_stack_walk(stack_trace_consume_fn consume_entry,
void *cookie, struct task_struct *task,
struct pt_regs *regs)
{
- struct unwind_state state;
+ struct stack_info stacks[] = {
+ stackinfo_get_task(task),
+ STACKINFO_CPU(irq),
+#if defined(CONFIG_VMAP_STACK)
+ STACKINFO_CPU(overflow),
+#endif
+#if defined(CONFIG_VMAP_STACK) && defined(CONFIG_ARM_SDE_INTERFACE)
+ STACKINFO_SDEI(normal),
+ STACKINFO_SDEI(critical),
+#endif
+ };
+ struct unwind_state state = {
+ .stacks = stacks,
+ .nr_stacks = ARRAY_SIZE(stacks),
+ };
if (regs) {
if (task != current)
diff --git a/arch/arm64/kernel/suspend.c b/arch/arm64/kernel/suspend.c
index 9135fe0f3df5..8b02d310838f 100644
--- a/arch/arm64/kernel/suspend.c
+++ b/arch/arm64/kernel/suspend.c
@@ -43,6 +43,8 @@ void notrace __cpu_suspend_exit(void)
{
unsigned int cpu = smp_processor_id();
+ mte_suspend_exit();
+
/*
* We are resuming from reset with the idmap active in TTBR0_EL1.
* We must uninstall the idmap and restore the expected MMU
diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c
index 3c026da95bbc..23d281ed7621 100644
--- a/arch/arm64/kernel/traps.c
+++ b/arch/arm64/kernel/traps.c
@@ -181,12 +181,12 @@ static void dump_kernel_instr(const char *lvl, struct pt_regs *regs)
#define S_SMP " SMP"
-static int __die(const char *str, int err, struct pt_regs *regs)
+static int __die(const char *str, long err, struct pt_regs *regs)
{
static int die_counter;
int ret;
- pr_emerg("Internal error: %s: %x [#%d]" S_PREEMPT S_SMP "\n",
+ pr_emerg("Internal error: %s: %016lx [#%d]" S_PREEMPT S_SMP "\n",
str, err, ++die_counter);
/* trap and error numbers are mostly meaningless on ARM */
@@ -207,7 +207,7 @@ static DEFINE_RAW_SPINLOCK(die_lock);
/*
* This function is protected against re-entrancy.
*/
-void die(const char *str, struct pt_regs *regs, int err)
+void die(const char *str, struct pt_regs *regs, long err)
{
int ret;
unsigned long flags;
@@ -486,7 +486,7 @@ void arm64_notify_segfault(unsigned long addr)
force_signal_inject(SIGSEGV, code, addr, 0);
}
-void do_undefinstr(struct pt_regs *regs)
+void do_undefinstr(struct pt_regs *regs, unsigned long esr)
{
/* check for AArch32 breakpoint instructions */
if (!aarch32_break_handler(regs))
@@ -495,28 +495,38 @@ void do_undefinstr(struct pt_regs *regs)
if (call_undef_hook(regs) == 0)
return;
- BUG_ON(!user_mode(regs));
+ if (!user_mode(regs))
+ die("Oops - Undefined instruction", regs, esr);
+
force_signal_inject(SIGILL, ILL_ILLOPC, regs->pc, 0);
}
NOKPROBE_SYMBOL(do_undefinstr);
-void do_bti(struct pt_regs *regs)
+void do_el0_bti(struct pt_regs *regs)
{
- BUG_ON(!user_mode(regs));
force_signal_inject(SIGILL, ILL_ILLOPC, regs->pc, 0);
}
-NOKPROBE_SYMBOL(do_bti);
-void do_ptrauth_fault(struct pt_regs *regs, unsigned long esr)
+void do_el1_bti(struct pt_regs *regs, unsigned long esr)
+{
+ die("Oops - BTI", regs, esr);
+}
+NOKPROBE_SYMBOL(do_el1_bti);
+
+void do_el0_fpac(struct pt_regs *regs, unsigned long esr)
+{
+ force_signal_inject(SIGILL, ILL_ILLOPN, regs->pc, esr);
+}
+
+void do_el1_fpac(struct pt_regs *regs, unsigned long esr)
{
/*
- * Unexpected FPAC exception or pointer authentication failure in
- * the kernel: kill the task before it does any more harm.
+ * Unexpected FPAC exception in the kernel: kill the task before it
+ * does any more harm.
*/
- BUG_ON(!user_mode(regs));
- force_signal_inject(SIGILL, ILL_ILLOPN, regs->pc, esr);
+ die("Oops - FPAC", regs, esr);
}
-NOKPROBE_SYMBOL(do_ptrauth_fault);
+NOKPROBE_SYMBOL(do_el1_fpac)
#define __user_cache_maint(insn, address, res) \
if (address >= TASK_SIZE_MAX) { \
@@ -759,7 +769,7 @@ void do_cp15instr(unsigned long esr, struct pt_regs *regs)
hook_base = cp15_64_hooks;
break;
default:
- do_undefinstr(regs);
+ do_undefinstr(regs, esr);
return;
}
@@ -774,7 +784,7 @@ void do_cp15instr(unsigned long esr, struct pt_regs *regs)
* EL0. Fall back to our usual undefined instruction handler
* so that we handle these consistently.
*/
- do_undefinstr(regs);
+ do_undefinstr(regs, esr);
}
NOKPROBE_SYMBOL(do_cp15instr);
#endif
@@ -794,7 +804,7 @@ void do_sysinstr(unsigned long esr, struct pt_regs *regs)
* back to our usual undefined instruction handler so that we handle
* these consistently.
*/
- do_undefinstr(regs);
+ do_undefinstr(regs, esr);
}
NOKPROBE_SYMBOL(do_sysinstr);
@@ -971,7 +981,7 @@ static int bug_handler(struct pt_regs *regs, unsigned long esr)
{
switch (report_bug(regs->pc, regs)) {
case BUG_TRAP_TYPE_BUG:
- die("Oops - BUG", regs, 0);
+ die("Oops - BUG", regs, esr);
break;
case BUG_TRAP_TYPE_WARN:
@@ -1071,7 +1081,7 @@ static int kasan_handler(struct pt_regs *regs, unsigned long esr)
* This is something that might be fixed at some point in the future.
*/
if (!recover)
- die("Oops - KASAN", regs, 0);
+ die("Oops - KASAN", regs, esr);
/* If thread survives, skip over the brk instruction and continue: */
arm64_skip_faulting_instruction(regs, AARCH64_INSN_SIZE);
diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c
index a61fc4f989b3..ac93a2ee9c07 100644
--- a/arch/arm64/kernel/vdso.c
+++ b/arch/arm64/kernel/vdso.c
@@ -29,9 +29,6 @@
#include <asm/signal32.h>
#include <asm/vdso.h>
-extern char vdso_start[], vdso_end[];
-extern char vdso32_start[], vdso32_end[];
-
enum vdso_abi {
VDSO_ABI_AA64,
VDSO_ABI_AA32,
diff --git a/arch/arm64/kernel/vdso/vdso.lds.S b/arch/arm64/kernel/vdso/vdso.lds.S
index e69fb4aaaf3e..6028f1fe2d1c 100644
--- a/arch/arm64/kernel/vdso/vdso.lds.S
+++ b/arch/arm64/kernel/vdso/vdso.lds.S
@@ -48,6 +48,13 @@ SECTIONS
PROVIDE (_etext = .);
PROVIDE (etext = .);
+ . = ALIGN(4);
+ .altinstructions : {
+ __alt_instructions = .;
+ *(.altinstructions)
+ __alt_instructions_end = .;
+ }
+
.dynamic : { *(.dynamic) } :text :dynamic
.rela.dyn : ALIGN(8) { *(.rela .rela*) }
diff --git a/arch/arm64/kvm/debug.c b/arch/arm64/kvm/debug.c
index 0b28d7db7c76..3f7563d768e2 100644
--- a/arch/arm64/kvm/debug.c
+++ b/arch/arm64/kvm/debug.c
@@ -295,12 +295,12 @@ void kvm_arch_vcpu_load_debug_state_flags(struct kvm_vcpu *vcpu)
* If SPE is present on this CPU and is available at current EL,
* we may need to check if the host state needs to be saved.
*/
- if (cpuid_feature_extract_unsigned_field(dfr0, ID_AA64DFR0_PMSVER_SHIFT) &&
+ if (cpuid_feature_extract_unsigned_field(dfr0, ID_AA64DFR0_EL1_PMSVer_SHIFT) &&
!(read_sysreg_s(SYS_PMBIDR_EL1) & BIT(SYS_PMBIDR_EL1_P_SHIFT)))
vcpu_set_flag(vcpu, DEBUG_STATE_SAVE_SPE);
/* Check if we have TRBE implemented and available at the host */
- if (cpuid_feature_extract_unsigned_field(dfr0, ID_AA64DFR0_TRBE_SHIFT) &&
+ if (cpuid_feature_extract_unsigned_field(dfr0, ID_AA64DFR0_EL1_TraceBuffer_SHIFT) &&
!(read_sysreg_s(SYS_TRBIDR_EL1) & TRBIDR_PROG))
vcpu_set_flag(vcpu, DEBUG_STATE_SAVE_TRBE);
}
diff --git a/arch/arm64/kvm/hyp/hyp-entry.S b/arch/arm64/kvm/hyp/hyp-entry.S
index 7839d075729b..8f3f93fa119e 100644
--- a/arch/arm64/kvm/hyp/hyp-entry.S
+++ b/arch/arm64/kvm/hyp/hyp-entry.S
@@ -196,7 +196,7 @@ SYM_CODE_END(__kvm_hyp_vector)
sub sp, sp, #(8 * 4)
stp x2, x3, [sp, #(8 * 0)]
stp x0, x1, [sp, #(8 * 2)]
- alternative_cb spectre_bhb_patch_wa3
+ alternative_cb ARM64_ALWAYS_SYSTEM, spectre_bhb_patch_wa3
/* Patched to mov WA3 when supported */
mov w0, #ARM_SMCCC_ARCH_WORKAROUND_1
alternative_cb_end
@@ -216,7 +216,7 @@ SYM_CODE_END(__kvm_hyp_vector)
mitigate_spectre_bhb_clear_insn
.endif
.if \indirect != 0
- alternative_cb kvm_patch_vector_branch
+ alternative_cb ARM64_ALWAYS_SYSTEM, kvm_patch_vector_branch
/*
* For ARM64_SPECTRE_V3A configurations, these NOPs get replaced with:
*
diff --git a/arch/arm64/kvm/hyp/include/nvhe/fixed_config.h b/arch/arm64/kvm/hyp/include/nvhe/fixed_config.h
index fa6e466ed57f..07edfc7524c9 100644
--- a/arch/arm64/kvm/hyp/include/nvhe/fixed_config.h
+++ b/arch/arm64/kvm/hyp/include/nvhe/fixed_config.h
@@ -35,9 +35,9 @@
* - Data Independent Timing
*/
#define PVM_ID_AA64PFR0_ALLOW (\
- ARM64_FEATURE_MASK(ID_AA64PFR0_FP) | \
- ARM64_FEATURE_MASK(ID_AA64PFR0_ASIMD) | \
- ARM64_FEATURE_MASK(ID_AA64PFR0_DIT) \
+ ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_FP) | \
+ ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_AdvSIMD) | \
+ ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_DIT) \
)
/*
@@ -49,11 +49,11 @@
* Supported by KVM
*/
#define PVM_ID_AA64PFR0_RESTRICT_UNSIGNED (\
- FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_EL0), ID_AA64PFR0_ELx_64BIT_ONLY) | \
- FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1), ID_AA64PFR0_ELx_64BIT_ONLY) | \
- FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_EL2), ID_AA64PFR0_ELx_64BIT_ONLY) | \
- FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_EL3), ID_AA64PFR0_ELx_64BIT_ONLY) | \
- FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_RAS), ID_AA64PFR0_RAS_V1) \
+ FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_EL0), ID_AA64PFR0_EL1_ELx_64BIT_ONLY) | \
+ FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_EL1), ID_AA64PFR0_EL1_ELx_64BIT_ONLY) | \
+ FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_EL2), ID_AA64PFR0_EL1_ELx_64BIT_ONLY) | \
+ FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_EL3), ID_AA64PFR0_EL1_ELx_64BIT_ONLY) | \
+ FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_RAS), ID_AA64PFR0_EL1_RAS_IMP) \
)
/*
@@ -62,8 +62,8 @@
* - Speculative Store Bypassing
*/
#define PVM_ID_AA64PFR1_ALLOW (\
- ARM64_FEATURE_MASK(ID_AA64PFR1_BT) | \
- ARM64_FEATURE_MASK(ID_AA64PFR1_SSBS) \
+ ARM64_FEATURE_MASK(ID_AA64PFR1_EL1_BT) | \
+ ARM64_FEATURE_MASK(ID_AA64PFR1_EL1_SSBS) \
)
/*
@@ -74,10 +74,10 @@
* - Non-context synchronizing exception entry and exit
*/
#define PVM_ID_AA64MMFR0_ALLOW (\
- ARM64_FEATURE_MASK(ID_AA64MMFR0_BIGENDEL) | \
- ARM64_FEATURE_MASK(ID_AA64MMFR0_SNSMEM) | \
- ARM64_FEATURE_MASK(ID_AA64MMFR0_BIGENDEL0) | \
- ARM64_FEATURE_MASK(ID_AA64MMFR0_EXS) \
+ ARM64_FEATURE_MASK(ID_AA64MMFR0_EL1_BIGEND) | \
+ ARM64_FEATURE_MASK(ID_AA64MMFR0_EL1_SNSMEM) | \
+ ARM64_FEATURE_MASK(ID_AA64MMFR0_EL1_BIGENDEL0) | \
+ ARM64_FEATURE_MASK(ID_AA64MMFR0_EL1_EXS) \
)
/*
@@ -86,8 +86,8 @@
* - 16-bit ASID
*/
#define PVM_ID_AA64MMFR0_RESTRICT_UNSIGNED (\
- FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64MMFR0_PARANGE), ID_AA64MMFR0_PARANGE_40) | \
- FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64MMFR0_ASID), ID_AA64MMFR0_ASID_16) \
+ FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64MMFR0_EL1_PARANGE), ID_AA64MMFR0_EL1_PARANGE_40) | \
+ FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64MMFR0_EL1_ASIDBITS), ID_AA64MMFR0_EL1_ASIDBITS_16) \
)
/*
@@ -100,12 +100,12 @@
* - Enhanced Translation Synchronization
*/
#define PVM_ID_AA64MMFR1_ALLOW (\
- ARM64_FEATURE_MASK(ID_AA64MMFR1_HADBS) | \
- ARM64_FEATURE_MASK(ID_AA64MMFR1_VMIDBITS) | \
- ARM64_FEATURE_MASK(ID_AA64MMFR1_HPD) | \
- ARM64_FEATURE_MASK(ID_AA64MMFR1_PAN) | \
- ARM64_FEATURE_MASK(ID_AA64MMFR1_SPECSEI) | \
- ARM64_FEATURE_MASK(ID_AA64MMFR1_ETS) \
+ ARM64_FEATURE_MASK(ID_AA64MMFR1_EL1_HAFDBS) | \
+ ARM64_FEATURE_MASK(ID_AA64MMFR1_EL1_VMIDBits) | \
+ ARM64_FEATURE_MASK(ID_AA64MMFR1_EL1_HPDS) | \
+ ARM64_FEATURE_MASK(ID_AA64MMFR1_EL1_PAN) | \
+ ARM64_FEATURE_MASK(ID_AA64MMFR1_EL1_SpecSEI) | \
+ ARM64_FEATURE_MASK(ID_AA64MMFR1_EL1_ETS) \
)
/*
@@ -120,14 +120,14 @@
* - E0PDx mechanism
*/
#define PVM_ID_AA64MMFR2_ALLOW (\
- ARM64_FEATURE_MASK(ID_AA64MMFR2_CNP) | \
- ARM64_FEATURE_MASK(ID_AA64MMFR2_UAO) | \
- ARM64_FEATURE_MASK(ID_AA64MMFR2_IESB) | \
- ARM64_FEATURE_MASK(ID_AA64MMFR2_AT) | \
- ARM64_FEATURE_MASK(ID_AA64MMFR2_IDS) | \
- ARM64_FEATURE_MASK(ID_AA64MMFR2_TTL) | \
- ARM64_FEATURE_MASK(ID_AA64MMFR2_BBM) | \
- ARM64_FEATURE_MASK(ID_AA64MMFR2_E0PD) \
+ ARM64_FEATURE_MASK(ID_AA64MMFR2_EL1_CnP) | \
+ ARM64_FEATURE_MASK(ID_AA64MMFR2_EL1_UAO) | \
+ ARM64_FEATURE_MASK(ID_AA64MMFR2_EL1_IESB) | \
+ ARM64_FEATURE_MASK(ID_AA64MMFR2_EL1_AT) | \
+ ARM64_FEATURE_MASK(ID_AA64MMFR2_EL1_IDS) | \
+ ARM64_FEATURE_MASK(ID_AA64MMFR2_EL1_TTL) | \
+ ARM64_FEATURE_MASK(ID_AA64MMFR2_EL1_BBM) | \
+ ARM64_FEATURE_MASK(ID_AA64MMFR2_EL1_E0PD) \
)
/*
diff --git a/arch/arm64/kvm/hyp/nvhe/pkvm.c b/arch/arm64/kvm/hyp/nvhe/pkvm.c
index 99c8d8b73e70..85d3b7ae720f 100644
--- a/arch/arm64/kvm/hyp/nvhe/pkvm.c
+++ b/arch/arm64/kvm/hyp/nvhe/pkvm.c
@@ -20,35 +20,35 @@ static void pvm_init_traps_aa64pfr0(struct kvm_vcpu *vcpu)
u64 cptr_set = 0;
/* Protected KVM does not support AArch32 guests. */
- BUILD_BUG_ON(FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL0),
- PVM_ID_AA64PFR0_RESTRICT_UNSIGNED) != ID_AA64PFR0_ELx_64BIT_ONLY);
- BUILD_BUG_ON(FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1),
- PVM_ID_AA64PFR0_RESTRICT_UNSIGNED) != ID_AA64PFR0_ELx_64BIT_ONLY);
+ BUILD_BUG_ON(FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_EL0),
+ PVM_ID_AA64PFR0_RESTRICT_UNSIGNED) != ID_AA64PFR0_EL1_ELx_64BIT_ONLY);
+ BUILD_BUG_ON(FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_EL1),
+ PVM_ID_AA64PFR0_RESTRICT_UNSIGNED) != ID_AA64PFR0_EL1_ELx_64BIT_ONLY);
/*
* Linux guests assume support for floating-point and Advanced SIMD. Do
* not change the trapping behavior for these from the KVM default.
*/
- BUILD_BUG_ON(!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_FP),
+ BUILD_BUG_ON(!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_FP),
PVM_ID_AA64PFR0_ALLOW));
- BUILD_BUG_ON(!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_ASIMD),
+ BUILD_BUG_ON(!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_AdvSIMD),
PVM_ID_AA64PFR0_ALLOW));
/* Trap RAS unless all current versions are supported */
- if (FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_RAS), feature_ids) <
- ID_AA64PFR0_RAS_V1P1) {
+ if (FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_RAS), feature_ids) <
+ ID_AA64PFR0_EL1_RAS_V1P1) {
hcr_set |= HCR_TERR | HCR_TEA;
hcr_clear |= HCR_FIEN;
}
/* Trap AMU */
- if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_AMU), feature_ids)) {
+ if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_AMU), feature_ids)) {
hcr_clear |= HCR_AMVOFFEN;
cptr_set |= CPTR_EL2_TAM;
}
/* Trap SVE */
- if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_SVE), feature_ids))
+ if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_SVE), feature_ids))
cptr_set |= CPTR_EL2_TZ;
vcpu->arch.hcr_el2 |= hcr_set;
@@ -66,7 +66,7 @@ static void pvm_init_traps_aa64pfr1(struct kvm_vcpu *vcpu)
u64 hcr_clear = 0;
/* Memory Tagging: Trap and Treat as Untagged if not supported. */
- if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR1_MTE), feature_ids)) {
+ if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR1_EL1_MTE), feature_ids)) {
hcr_set |= HCR_TID5;
hcr_clear |= HCR_DCT | HCR_ATA;
}
@@ -86,32 +86,32 @@ static void pvm_init_traps_aa64dfr0(struct kvm_vcpu *vcpu)
u64 cptr_set = 0;
/* Trap/constrain PMU */
- if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_PMUVER), feature_ids)) {
+ if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_EL1_PMUVer), feature_ids)) {
mdcr_set |= MDCR_EL2_TPM | MDCR_EL2_TPMCR;
mdcr_clear |= MDCR_EL2_HPME | MDCR_EL2_MTPME |
MDCR_EL2_HPMN_MASK;
}
/* Trap Debug */
- if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_DEBUGVER), feature_ids))
+ if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_EL1_DebugVer), feature_ids))
mdcr_set |= MDCR_EL2_TDRA | MDCR_EL2_TDA | MDCR_EL2_TDE;
/* Trap OS Double Lock */
- if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_DOUBLELOCK), feature_ids))
+ if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_EL1_DoubleLock), feature_ids))
mdcr_set |= MDCR_EL2_TDOSA;
/* Trap SPE */
- if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_PMSVER), feature_ids)) {
+ if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_EL1_PMSVer), feature_ids)) {
mdcr_set |= MDCR_EL2_TPMS;
mdcr_clear |= MDCR_EL2_E2PB_MASK << MDCR_EL2_E2PB_SHIFT;
}
/* Trap Trace Filter */
- if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_TRACE_FILT), feature_ids))
+ if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_EL1_TraceFilt), feature_ids))
mdcr_set |= MDCR_EL2_TTRF;
/* Trap Trace */
- if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_TRACEVER), feature_ids))
+ if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_EL1_TraceVer), feature_ids))
cptr_set |= CPTR_EL2_TTA;
vcpu->arch.mdcr_el2 |= mdcr_set;
@@ -128,7 +128,7 @@ static void pvm_init_traps_aa64mmfr0(struct kvm_vcpu *vcpu)
u64 mdcr_set = 0;
/* Trap Debug Communications Channel registers */
- if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64MMFR0_FGT), feature_ids))
+ if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64MMFR0_EL1_FGT), feature_ids))
mdcr_set |= MDCR_EL2_TDCC;
vcpu->arch.mdcr_el2 |= mdcr_set;
@@ -143,7 +143,7 @@ static void pvm_init_traps_aa64mmfr1(struct kvm_vcpu *vcpu)
u64 hcr_set = 0;
/* Trap LOR */
- if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64MMFR1_LOR), feature_ids))
+ if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64MMFR1_EL1_LO), feature_ids))
hcr_set |= HCR_TLOR;
vcpu->arch.hcr_el2 |= hcr_set;
diff --git a/arch/arm64/kvm/hyp/nvhe/stacktrace.c b/arch/arm64/kvm/hyp/nvhe/stacktrace.c
index 58f645ad66bc..ed6b58b19cfa 100644
--- a/arch/arm64/kvm/hyp/nvhe/stacktrace.c
+++ b/arch/arm64/kvm/hyp/nvhe/stacktrace.c
@@ -39,41 +39,32 @@ static void hyp_prepare_backtrace(unsigned long fp, unsigned long pc)
DEFINE_PER_CPU(unsigned long [NVHE_STACKTRACE_SIZE/sizeof(long)], pkvm_stacktrace);
-static bool on_overflow_stack(unsigned long sp, unsigned long size,
- struct stack_info *info)
+static struct stack_info stackinfo_get_overflow(void)
{
unsigned long low = (unsigned long)this_cpu_ptr(overflow_stack);
unsigned long high = low + OVERFLOW_STACK_SIZE;
- return on_stack(sp, size, low, high, STACK_TYPE_OVERFLOW, info);
+ return (struct stack_info) {
+ .low = low,
+ .high = high,
+ };
}
-static bool on_hyp_stack(unsigned long sp, unsigned long size,
- struct stack_info *info)
+static struct stack_info stackinfo_get_hyp(void)
{
struct kvm_nvhe_init_params *params = this_cpu_ptr(&kvm_init_params);
unsigned long high = params->stack_hyp_va;
unsigned long low = high - PAGE_SIZE;
- return on_stack(sp, size, low, high, STACK_TYPE_HYP, info);
-}
-
-static bool on_accessible_stack(const struct task_struct *tsk,
- unsigned long sp, unsigned long size,
- struct stack_info *info)
-{
- if (info)
- info->type = STACK_TYPE_UNKNOWN;
-
- return (on_overflow_stack(sp, size, info) ||
- on_hyp_stack(sp, size, info));
+ return (struct stack_info) {
+ .low = low,
+ .high = high,
+ };
}
static int unwind_next(struct unwind_state *state)
{
- struct stack_info info;
-
- return unwind_next_common(state, &info, on_accessible_stack, NULL);
+ return unwind_next_frame_record(state);
}
static void notrace unwind(struct unwind_state *state,
@@ -129,7 +120,14 @@ static bool pkvm_save_backtrace_entry(void *arg, unsigned long where)
*/
static void pkvm_save_backtrace(unsigned long fp, unsigned long pc)
{
- struct unwind_state state;
+ struct stack_info stacks[] = {
+ stackinfo_get_overflow(),
+ stackinfo_get_hyp(),
+ };
+ struct unwind_state state = {
+ .stacks = stacks,
+ .nr_stacks = ARRAY_SIZE(stacks),
+ };
int idx = 0;
kvm_nvhe_unwind_init(&state, fp, pc);
diff --git a/arch/arm64/kvm/hyp/nvhe/sys_regs.c b/arch/arm64/kvm/hyp/nvhe/sys_regs.c
index e20fa4475dac..0f9ac25afdf4 100644
--- a/arch/arm64/kvm/hyp/nvhe/sys_regs.c
+++ b/arch/arm64/kvm/hyp/nvhe/sys_regs.c
@@ -92,9 +92,9 @@ static u64 get_pvm_id_aa64pfr0(const struct kvm_vcpu *vcpu)
PVM_ID_AA64PFR0_RESTRICT_UNSIGNED);
/* Spectre and Meltdown mitigation in KVM */
- set_mask |= FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_CSV2),
+ set_mask |= FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_CSV2),
(u64)kvm->arch.pfr0_csv2);
- set_mask |= FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_CSV3),
+ set_mask |= FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_CSV3),
(u64)kvm->arch.pfr0_csv3);
return (id_aa64pfr0_el1_sys_val & allow_mask) | set_mask;
@@ -106,7 +106,7 @@ static u64 get_pvm_id_aa64pfr1(const struct kvm_vcpu *vcpu)
u64 allow_mask = PVM_ID_AA64PFR1_ALLOW;
if (!kvm_has_mte(kvm))
- allow_mask &= ~ARM64_FEATURE_MASK(ID_AA64PFR1_MTE);
+ allow_mask &= ~ARM64_FEATURE_MASK(ID_AA64PFR1_EL1_MTE);
return id_aa64pfr1_el1_sys_val & allow_mask;
}
@@ -281,8 +281,8 @@ static bool pvm_access_id_aarch32(struct kvm_vcpu *vcpu,
* No support for AArch32 guests, therefore, pKVM has no sanitized copy
* of AArch32 feature id registers.
*/
- BUILD_BUG_ON(FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1),
- PVM_ID_AA64PFR0_RESTRICT_UNSIGNED) > ID_AA64PFR0_ELx_64BIT_ONLY);
+ BUILD_BUG_ON(FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_EL1),
+ PVM_ID_AA64PFR0_RESTRICT_UNSIGNED) > ID_AA64PFR0_EL1_ELx_64BIT_ONLY);
return pvm_access_raz_wi(vcpu, p, r);
}
diff --git a/arch/arm64/kvm/hyp/pgtable.c b/arch/arm64/kvm/hyp/pgtable.c
index 2cb3867eb7c2..cdf8e76b0be1 100644
--- a/arch/arm64/kvm/hyp/pgtable.c
+++ b/arch/arm64/kvm/hyp/pgtable.c
@@ -61,7 +61,7 @@ struct kvm_pgtable_walk_data {
static bool kvm_phys_is_valid(u64 phys)
{
- return phys < BIT(id_aa64mmfr0_parange_to_phys_shift(ID_AA64MMFR0_PARANGE_MAX));
+ return phys < BIT(id_aa64mmfr0_parange_to_phys_shift(ID_AA64MMFR0_EL1_PARANGE_MAX));
}
static bool kvm_block_mapping_supported(u64 addr, u64 end, u64 phys, u32 level)
diff --git a/arch/arm64/kvm/pmu-emul.c b/arch/arm64/kvm/pmu-emul.c
index 11c43bed5f97..0003c7d37533 100644
--- a/arch/arm64/kvm/pmu-emul.c
+++ b/arch/arm64/kvm/pmu-emul.c
@@ -33,12 +33,12 @@ static u32 kvm_pmu_event_mask(struct kvm *kvm)
pmuver = kvm->arch.arm_pmu->pmuver;
switch (pmuver) {
- case ID_AA64DFR0_PMUVER_8_0:
+ case ID_AA64DFR0_EL1_PMUVer_IMP:
return GENMASK(9, 0);
- case ID_AA64DFR0_PMUVER_8_1:
- case ID_AA64DFR0_PMUVER_8_4:
- case ID_AA64DFR0_PMUVER_8_5:
- case ID_AA64DFR0_PMUVER_8_7:
+ case ID_AA64DFR0_EL1_PMUVer_V3P1:
+ case ID_AA64DFR0_EL1_PMUVer_V3P4:
+ case ID_AA64DFR0_EL1_PMUVer_V3P5:
+ case ID_AA64DFR0_EL1_PMUVer_V3P7:
return GENMASK(15, 0);
default: /* Shouldn't be here, just for sanity */
WARN_ONCE(1, "Unknown PMU version %d\n", pmuver);
@@ -774,7 +774,7 @@ void kvm_host_pmu_init(struct arm_pmu *pmu)
{
struct arm_pmu_entry *entry;
- if (pmu->pmuver == 0 || pmu->pmuver == ID_AA64DFR0_PMUVER_IMP_DEF)
+ if (pmu->pmuver == 0 || pmu->pmuver == ID_AA64DFR0_EL1_PMUVer_IMP_DEF)
return;
mutex_lock(&arm_pmus_lock);
@@ -828,7 +828,7 @@ static struct arm_pmu *kvm_pmu_probe_armpmu(void)
if (event->pmu) {
pmu = to_arm_pmu(event->pmu);
if (pmu->pmuver == 0 ||
- pmu->pmuver == ID_AA64DFR0_PMUVER_IMP_DEF)
+ pmu->pmuver == ID_AA64DFR0_EL1_PMUVer_IMP_DEF)
pmu = NULL;
}
@@ -856,7 +856,7 @@ u64 kvm_pmu_get_pmceid(struct kvm_vcpu *vcpu, bool pmceid1)
* Don't advertise STALL_SLOT, as PMMIR_EL0 is handled
* as RAZ
*/
- if (vcpu->kvm->arch.arm_pmu->pmuver >= ID_AA64DFR0_PMUVER_8_4)
+ if (vcpu->kvm->arch.arm_pmu->pmuver >= ID_AA64DFR0_EL1_PMUVer_V3P4)
val &= ~BIT_ULL(ARMV8_PMUV3_PERFCTR_STALL_SLOT - 32);
base = 32;
}
diff --git a/arch/arm64/kvm/reset.c b/arch/arm64/kvm/reset.c
index 0e08fbe68715..5ae18472205a 100644
--- a/arch/arm64/kvm/reset.c
+++ b/arch/arm64/kvm/reset.c
@@ -359,7 +359,7 @@ int kvm_set_ipa_limit(void)
mmfr0 = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1);
parange = cpuid_feature_extract_unsigned_field(mmfr0,
- ID_AA64MMFR0_PARANGE_SHIFT);
+ ID_AA64MMFR0_EL1_PARANGE_SHIFT);
/*
* IPA size beyond 48 bits could not be supported
* on either 4K or 16K page size. Hence let's cap
@@ -367,20 +367,20 @@ int kvm_set_ipa_limit(void)
* on the system.
*/
if (PAGE_SIZE != SZ_64K)
- parange = min(parange, (unsigned int)ID_AA64MMFR0_PARANGE_48);
+ parange = min(parange, (unsigned int)ID_AA64MMFR0_EL1_PARANGE_48);
/*
* Check with ARMv8.5-GTG that our PAGE_SIZE is supported at
* Stage-2. If not, things will stop very quickly.
*/
- switch (cpuid_feature_extract_unsigned_field(mmfr0, ID_AA64MMFR0_TGRAN_2_SHIFT)) {
- case ID_AA64MMFR0_TGRAN_2_SUPPORTED_NONE:
+ switch (cpuid_feature_extract_unsigned_field(mmfr0, ID_AA64MMFR0_EL1_TGRAN_2_SHIFT)) {
+ case ID_AA64MMFR0_EL1_TGRAN_2_SUPPORTED_NONE:
kvm_err("PAGE_SIZE not supported at Stage-2, giving up\n");
return -EINVAL;
- case ID_AA64MMFR0_TGRAN_2_SUPPORTED_DEFAULT:
+ case ID_AA64MMFR0_EL1_TGRAN_2_SUPPORTED_DEFAULT:
kvm_debug("PAGE_SIZE supported at Stage-2 (default)\n");
break;
- case ID_AA64MMFR0_TGRAN_2_SUPPORTED_MIN ... ID_AA64MMFR0_TGRAN_2_SUPPORTED_MAX:
+ case ID_AA64MMFR0_EL1_TGRAN_2_SUPPORTED_MIN ... ID_AA64MMFR0_EL1_TGRAN_2_SUPPORTED_MAX:
kvm_debug("PAGE_SIZE supported at Stage-2 (advertised)\n");
break;
default:
diff --git a/arch/arm64/kvm/stacktrace.c b/arch/arm64/kvm/stacktrace.c
index 949d19d603fb..3ace5b75813b 100644
--- a/arch/arm64/kvm/stacktrace.c
+++ b/arch/arm64/kvm/stacktrace.c
@@ -21,6 +21,54 @@
#include <asm/stacktrace/nvhe.h>
+static struct stack_info stackinfo_get_overflow(void)
+{
+ struct kvm_nvhe_stacktrace_info *stacktrace_info
+ = this_cpu_ptr_nvhe_sym(kvm_stacktrace_info);
+ unsigned long low = (unsigned long)stacktrace_info->overflow_stack_base;
+ unsigned long high = low + OVERFLOW_STACK_SIZE;
+
+ return (struct stack_info) {
+ .low = low,
+ .high = high,
+ };
+}
+
+static struct stack_info stackinfo_get_overflow_kern_va(void)
+{
+ unsigned long low = (unsigned long)this_cpu_ptr_nvhe_sym(overflow_stack);
+ unsigned long high = low + OVERFLOW_STACK_SIZE;
+
+ return (struct stack_info) {
+ .low = low,
+ .high = high,
+ };
+}
+
+static struct stack_info stackinfo_get_hyp(void)
+{
+ struct kvm_nvhe_stacktrace_info *stacktrace_info
+ = this_cpu_ptr_nvhe_sym(kvm_stacktrace_info);
+ unsigned long low = (unsigned long)stacktrace_info->stack_base;
+ unsigned long high = low + PAGE_SIZE;
+
+ return (struct stack_info) {
+ .low = low,
+ .high = high,
+ };
+}
+
+static struct stack_info stackinfo_get_hyp_kern_va(void)
+{
+ unsigned long low = (unsigned long)*this_cpu_ptr(&kvm_arm_hyp_stack_page);
+ unsigned long high = low + PAGE_SIZE;
+
+ return (struct stack_info) {
+ .low = low,
+ .high = high,
+ };
+}
+
/*
* kvm_nvhe_stack_kern_va - Convert KVM nVHE HYP stack addresses to a kernel VAs
*
@@ -34,73 +82,45 @@
* Returns true on success and updates @addr to its corresponding kernel VA;
* otherwise returns false.
*/
-static bool kvm_nvhe_stack_kern_va(unsigned long *addr,
- enum stack_type type)
+static bool kvm_nvhe_stack_kern_va(unsigned long *addr, unsigned long size)
{
- struct kvm_nvhe_stacktrace_info *stacktrace_info;
- unsigned long hyp_base, kern_base, hyp_offset;
+ struct stack_info stack_hyp, stack_kern;
- stacktrace_info = this_cpu_ptr_nvhe_sym(kvm_stacktrace_info);
+ stack_hyp = stackinfo_get_hyp();
+ stack_kern = stackinfo_get_hyp_kern_va();
+ if (stackinfo_on_stack(&stack_hyp, *addr, size))
+ goto found;
- switch (type) {
- case STACK_TYPE_HYP:
- kern_base = (unsigned long)*this_cpu_ptr(&kvm_arm_hyp_stack_page);
- hyp_base = (unsigned long)stacktrace_info->stack_base;
- break;
- case STACK_TYPE_OVERFLOW:
- kern_base = (unsigned long)this_cpu_ptr_nvhe_sym(overflow_stack);
- hyp_base = (unsigned long)stacktrace_info->overflow_stack_base;
- break;
- default:
- return false;
- }
+ stack_hyp = stackinfo_get_overflow();
+ stack_kern = stackinfo_get_overflow_kern_va();
+ if (stackinfo_on_stack(&stack_hyp, *addr, size))
+ goto found;
- hyp_offset = *addr - hyp_base;
-
- *addr = kern_base + hyp_offset;
+ return false;
+found:
+ *addr = *addr - stack_hyp.low + stack_kern.low;
return true;
}
-static bool on_overflow_stack(unsigned long sp, unsigned long size,
- struct stack_info *info)
-{
- struct kvm_nvhe_stacktrace_info *stacktrace_info
- = this_cpu_ptr_nvhe_sym(kvm_stacktrace_info);
- unsigned long low = (unsigned long)stacktrace_info->overflow_stack_base;
- unsigned long high = low + OVERFLOW_STACK_SIZE;
-
- return on_stack(sp, size, low, high, STACK_TYPE_OVERFLOW, info);
-}
-
-static bool on_hyp_stack(unsigned long sp, unsigned long size,
- struct stack_info *info)
-{
- struct kvm_nvhe_stacktrace_info *stacktrace_info
- = this_cpu_ptr_nvhe_sym(kvm_stacktrace_info);
- unsigned long low = (unsigned long)stacktrace_info->stack_base;
- unsigned long high = low + PAGE_SIZE;
-
- return on_stack(sp, size, low, high, STACK_TYPE_HYP, info);
-}
-
-static bool on_accessible_stack(const struct task_struct *tsk,
- unsigned long sp, unsigned long size,
- struct stack_info *info)
+/*
+ * Convert a KVN nVHE HYP frame record address to a kernel VA
+ */
+static bool kvm_nvhe_stack_kern_record_va(unsigned long *addr)
{
- if (info)
- info->type = STACK_TYPE_UNKNOWN;
-
- return (on_overflow_stack(sp, size, info) ||
- on_hyp_stack(sp, size, info));
+ return kvm_nvhe_stack_kern_va(addr, 16);
}
static int unwind_next(struct unwind_state *state)
{
- struct stack_info info;
-
- return unwind_next_common(state, &info, on_accessible_stack,
- kvm_nvhe_stack_kern_va);
+ /*
+ * The FP is in the hypervisor VA space. Convert it to the kernel VA
+ * space so it can be unwound by the regular unwind functions.
+ */
+ if (!kvm_nvhe_stack_kern_record_va(&state->fp))
+ return -EINVAL;
+
+ return unwind_next_frame_record(state);
}
static void unwind(struct unwind_state *state,
@@ -158,7 +178,14 @@ static void kvm_nvhe_dump_backtrace_end(void)
static void hyp_dump_backtrace(unsigned long hyp_offset)
{
struct kvm_nvhe_stacktrace_info *stacktrace_info;
- struct unwind_state state;
+ struct stack_info stacks[] = {
+ stackinfo_get_overflow_kern_va(),
+ stackinfo_get_hyp_kern_va(),
+ };
+ struct unwind_state state = {
+ .stacks = stacks,
+ .nr_stacks = ARRAY_SIZE(stacks),
+ };
stacktrace_info = this_cpu_ptr_nvhe_sym(kvm_stacktrace_info);
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 3234f50b8c4b..2ef1121ab844 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -273,7 +273,7 @@ static bool trap_loregion(struct kvm_vcpu *vcpu,
u64 val = read_sanitised_ftr_reg(SYS_ID_AA64MMFR1_EL1);
u32 sr = reg_to_encoding(r);
- if (!(val & (0xfUL << ID_AA64MMFR1_LOR_SHIFT))) {
+ if (!(val & (0xfUL << ID_AA64MMFR1_EL1_LO_SHIFT))) {
kvm_inject_undefined(vcpu);
return false;
}
@@ -1077,22 +1077,22 @@ static u64 read_id_reg(const struct kvm_vcpu *vcpu,
switch (id) {
case SYS_ID_AA64PFR0_EL1:
if (!vcpu_has_sve(vcpu))
- val &= ~ARM64_FEATURE_MASK(ID_AA64PFR0_SVE);
- val &= ~ARM64_FEATURE_MASK(ID_AA64PFR0_AMU);
- val &= ~ARM64_FEATURE_MASK(ID_AA64PFR0_CSV2);
- val |= FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_CSV2), (u64)vcpu->kvm->arch.pfr0_csv2);
- val &= ~ARM64_FEATURE_MASK(ID_AA64PFR0_CSV3);
- val |= FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_CSV3), (u64)vcpu->kvm->arch.pfr0_csv3);
+ val &= ~ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_SVE);
+ val &= ~ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_AMU);
+ val &= ~ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_CSV2);
+ val |= FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_CSV2), (u64)vcpu->kvm->arch.pfr0_csv2);
+ val &= ~ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_CSV3);
+ val |= FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_CSV3), (u64)vcpu->kvm->arch.pfr0_csv3);
if (kvm_vgic_global_state.type == VGIC_V3) {
- val &= ~ARM64_FEATURE_MASK(ID_AA64PFR0_GIC);
- val |= FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_GIC), 1);
+ val &= ~ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_GIC);
+ val |= FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_GIC), 1);
}
break;
case SYS_ID_AA64PFR1_EL1:
if (!kvm_has_mte(vcpu->kvm))
- val &= ~ARM64_FEATURE_MASK(ID_AA64PFR1_MTE);
+ val &= ~ARM64_FEATURE_MASK(ID_AA64PFR1_EL1_MTE);
- val &= ~ARM64_FEATURE_MASK(ID_AA64PFR1_SME);
+ val &= ~ARM64_FEATURE_MASK(ID_AA64PFR1_EL1_SME);
break;
case SYS_ID_AA64ISAR1_EL1:
if (!vcpu_has_ptrauth(vcpu))
@@ -1110,14 +1110,14 @@ static u64 read_id_reg(const struct kvm_vcpu *vcpu,
break;
case SYS_ID_AA64DFR0_EL1:
/* Limit debug to ARMv8.0 */
- val &= ~ARM64_FEATURE_MASK(ID_AA64DFR0_DEBUGVER);
- val |= FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64DFR0_DEBUGVER), 6);
+ val &= ~ARM64_FEATURE_MASK(ID_AA64DFR0_EL1_DebugVer);
+ val |= FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64DFR0_EL1_DebugVer), 6);
/* Limit guests to PMUv3 for ARMv8.4 */
val = cpuid_feature_cap_perfmon_field(val,
- ID_AA64DFR0_PMUVER_SHIFT,
- kvm_vcpu_has_pmu(vcpu) ? ID_AA64DFR0_PMUVER_8_4 : 0);
+ ID_AA64DFR0_EL1_PMUVer_SHIFT,
+ kvm_vcpu_has_pmu(vcpu) ? ID_AA64DFR0_EL1_PMUVer_V3P4 : 0);
/* Hide SPE from guests */
- val &= ~ARM64_FEATURE_MASK(ID_AA64DFR0_PMSVER);
+ val &= ~ARM64_FEATURE_MASK(ID_AA64DFR0_EL1_PMSVer);
break;
case SYS_ID_DFR0_EL1:
/* Limit guests to PMUv3 for ARMv8.4 */
@@ -1196,21 +1196,21 @@ static int set_id_aa64pfr0_el1(struct kvm_vcpu *vcpu,
* it doesn't promise more than what is actually provided (the
* guest could otherwise be covered in ectoplasmic residue).
*/
- csv2 = cpuid_feature_extract_unsigned_field(val, ID_AA64PFR0_CSV2_SHIFT);
+ csv2 = cpuid_feature_extract_unsigned_field(val, ID_AA64PFR0_EL1_CSV2_SHIFT);
if (csv2 > 1 ||
(csv2 && arm64_get_spectre_v2_state() != SPECTRE_UNAFFECTED))
return -EINVAL;
/* Same thing for CSV3 */
- csv3 = cpuid_feature_extract_unsigned_field(val, ID_AA64PFR0_CSV3_SHIFT);
+ csv3 = cpuid_feature_extract_unsigned_field(val, ID_AA64PFR0_EL1_CSV3_SHIFT);
if (csv3 > 1 ||
(csv3 && arm64_get_meltdown_state() != SPECTRE_UNAFFECTED))
return -EINVAL;
/* We can only differ with CSV[23], and anything else is an error */
val ^= read_id_reg(vcpu, rd, false);
- val &= ~((0xFUL << ID_AA64PFR0_CSV2_SHIFT) |
- (0xFUL << ID_AA64PFR0_CSV3_SHIFT));
+ val &= ~((0xFUL << ID_AA64PFR0_EL1_CSV2_SHIFT) |
+ (0xFUL << ID_AA64PFR0_EL1_CSV3_SHIFT));
if (val)
return -EINVAL;
@@ -1825,11 +1825,11 @@ static bool trap_dbgdidr(struct kvm_vcpu *vcpu,
} else {
u64 dfr = read_sanitised_ftr_reg(SYS_ID_AA64DFR0_EL1);
u64 pfr = read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1);
- u32 el3 = !!cpuid_feature_extract_unsigned_field(pfr, ID_AA64PFR0_EL3_SHIFT);
+ u32 el3 = !!cpuid_feature_extract_unsigned_field(pfr, ID_AA64PFR0_EL1_EL3_SHIFT);
- p->regval = ((((dfr >> ID_AA64DFR0_WRPS_SHIFT) & 0xf) << 28) |
- (((dfr >> ID_AA64DFR0_BRPS_SHIFT) & 0xf) << 24) |
- (((dfr >> ID_AA64DFR0_CTX_CMPS_SHIFT) & 0xf) << 20)
+ p->regval = ((((dfr >> ID_AA64DFR0_EL1_WRPs_SHIFT) & 0xf) << 28) |
+ (((dfr >> ID_AA64DFR0_EL1_BRPs_SHIFT) & 0xf) << 24) |
+ (((dfr >> ID_AA64DFR0_EL1_CTX_CMPs_SHIFT) & 0xf) << 20)
| (6 << 16) | (1 << 15) | (el3 << 14) | (el3 << 12));
return true;
}
diff --git a/arch/arm64/kvm/va_layout.c b/arch/arm64/kvm/va_layout.c
index acdb7b3cc97d..91b22a014610 100644
--- a/arch/arm64/kvm/va_layout.c
+++ b/arch/arm64/kvm/va_layout.c
@@ -169,7 +169,7 @@ void __init kvm_update_va_mask(struct alt_instr *alt,
* dictates it and we don't have any spare bits in the
* address), NOP everything after masking the kernel VA.
*/
- if (has_vhe() || (!tag_val && i > 0)) {
+ if (cpus_have_cap(ARM64_HAS_VIRT_HOST_EXTN) || (!tag_val && i > 0)) {
updptr[i] = cpu_to_le32(aarch64_insn_gen_nop());
continue;
}
@@ -193,7 +193,8 @@ void kvm_patch_vector_branch(struct alt_instr *alt,
BUG_ON(nr_inst != 4);
- if (!cpus_have_const_cap(ARM64_SPECTRE_V3A) || WARN_ON_ONCE(has_vhe()))
+ if (!cpus_have_cap(ARM64_SPECTRE_V3A) ||
+ WARN_ON_ONCE(cpus_have_cap(ARM64_HAS_VIRT_HOST_EXTN)))
return;
/*
diff --git a/arch/arm64/mm/context.c b/arch/arm64/mm/context.c
index b8b4cf0bcf39..e1e0dca01839 100644
--- a/arch/arm64/mm/context.c
+++ b/arch/arm64/mm/context.c
@@ -43,17 +43,17 @@ static u32 get_cpu_asid_bits(void)
{
u32 asid;
int fld = cpuid_feature_extract_unsigned_field(read_cpuid(ID_AA64MMFR0_EL1),
- ID_AA64MMFR0_ASID_SHIFT);
+ ID_AA64MMFR0_EL1_ASIDBITS_SHIFT);
switch (fld) {
default:
pr_warn("CPU%d: Unknown ASID size (%d); assuming 8-bit\n",
smp_processor_id(), fld);
fallthrough;
- case ID_AA64MMFR0_ASID_8:
+ case ID_AA64MMFR0_EL1_ASIDBITS_8:
asid = 8;
break;
- case ID_AA64MMFR0_ASID_16:
+ case ID_AA64MMFR0_EL1_ASIDBITS_16:
asid = 16;
}
diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
index 599cf81f5685..83a512a6ff0d 100644
--- a/arch/arm64/mm/dma-mapping.c
+++ b/arch/arm64/mm/dma-mapping.c
@@ -36,7 +36,7 @@ void arch_dma_prep_coherent(struct page *page, size_t size)
{
unsigned long start = (unsigned long)page_address(page);
- dcache_clean_inval_poc(start, start + size);
+ dcache_clean_poc(start, start + size);
}
#ifdef CONFIG_IOMMU_DMA
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index c33f1fad2745..5b391490e045 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -691,6 +691,9 @@ static int __kprobes do_translation_fault(unsigned long far,
static int do_alignment_fault(unsigned long far, unsigned long esr,
struct pt_regs *regs)
{
+ if (IS_ENABLED(CONFIG_COMPAT_ALIGNMENT_FIXUPS) &&
+ compat_user_mode(regs))
+ return do_compat_alignment_fixup(far, regs);
do_bad_area(far, esr, regs);
return 0;
}
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index b9af30be813e..4b4651ee47f2 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -360,7 +360,7 @@ void __init arm64_memblock_init(void)
extern u16 memstart_offset_seed;
u64 mmfr0 = read_cpuid(ID_AA64MMFR0_EL1);
int parange = cpuid_feature_extract_unsigned_field(
- mmfr0, ID_AA64MMFR0_PARANGE_SHIFT);
+ mmfr0, ID_AA64MMFR0_EL1_PARANGE_SHIFT);
s64 range = linear_region_size -
BIT(id_aa64mmfr0_parange_to_phys_shift(parange));
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index eb489302c28a..9a7c38965154 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -539,7 +539,7 @@ static void __init map_mem(pgd_t *pgdp)
*/
BUILD_BUG_ON(pgd_index(direct_map_end - 1) == pgd_index(direct_map_end));
- if (can_set_direct_map() || IS_ENABLED(CONFIG_KFENCE))
+ if (can_set_direct_map())
flags |= NO_BLOCK_MAPPINGS | NO_CONT_MAPPINGS;
/*
@@ -690,7 +690,7 @@ static bool arm64_early_this_cpu_has_bti(void)
pfr1 = __read_sysreg_by_encoding(SYS_ID_AA64PFR1_EL1);
return cpuid_feature_extract_unsigned_field(pfr1,
- ID_AA64PFR1_BT_SHIFT);
+ ID_AA64PFR1_EL1_BT_SHIFT);
}
/*
@@ -1184,14 +1184,6 @@ static void free_empty_tables(unsigned long addr, unsigned long end,
}
#endif
-#if !ARM64_KERNEL_USES_PMD_MAPS
-int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
- struct vmem_altmap *altmap)
-{
- WARN_ON((start < VMEMMAP_START) || (end > VMEMMAP_END));
- return vmemmap_populate_basepages(start, end, node, altmap);
-}
-#else /* !ARM64_KERNEL_USES_PMD_MAPS */
int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
struct vmem_altmap *altmap)
{
@@ -1203,6 +1195,10 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
pmd_t *pmdp;
WARN_ON((start < VMEMMAP_START) || (end > VMEMMAP_END));
+
+ if (!ARM64_KERNEL_USES_PMD_MAPS)
+ return vmemmap_populate_basepages(start, end, node, altmap);
+
do {
next = pmd_addr_end(addr, end);
@@ -1236,7 +1232,6 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
return 0;
}
-#endif /* !ARM64_KERNEL_USES_PMD_MAPS */
#ifdef CONFIG_MEMORY_HOTPLUG
void vmemmap_free(unsigned long start, unsigned long end,
@@ -1551,11 +1546,7 @@ int arch_add_memory(int nid, u64 start, u64 size,
VM_BUG_ON(!mhp_range_allowed(start, size, true));
- /*
- * KFENCE requires linear map to be mapped at page granularity, so that
- * it is possible to protect/unprotect single pages in the KFENCE pool.
- */
- if (can_set_direct_map() || IS_ENABLED(CONFIG_KFENCE))
+ if (can_set_direct_map())
flags |= NO_BLOCK_MAPPINGS | NO_CONT_MAPPINGS;
__create_pgd_mapping(swapper_pg_dir, start, __phys_to_virt(start),
diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c
index 64e985eaa52d..d107c3d434e2 100644
--- a/arch/arm64/mm/pageattr.c
+++ b/arch/arm64/mm/pageattr.c
@@ -21,7 +21,13 @@ bool rodata_full __ro_after_init = IS_ENABLED(CONFIG_RODATA_FULL_DEFAULT_ENABLED
bool can_set_direct_map(void)
{
- return rodata_full || debug_pagealloc_enabled();
+ /*
+ * rodata_full, DEBUG_PAGEALLOC and KFENCE require linear map to be
+ * mapped at page granularity, so that it is possible to
+ * protect/unprotect single pages.
+ */
+ return rodata_full || debug_pagealloc_enabled() ||
+ IS_ENABLED(CONFIG_KFENCE);
}
static int change_page_range(pte_t *ptep, unsigned long addr, void *data)
diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S
index 8b9f419fcad9..b9ecbbae1e1a 100644
--- a/arch/arm64/mm/proc.S
+++ b/arch/arm64/mm/proc.S
@@ -49,17 +49,19 @@
#ifdef CONFIG_KASAN_HW_TAGS
#define TCR_MTE_FLAGS TCR_TCMA1 | TCR_TBI1 | TCR_TBID1
-#else
+#elif defined(CONFIG_ARM64_MTE)
/*
* The mte_zero_clear_page_tags() implementation uses DC GZVA, which relies on
* TBI being enabled at EL1.
*/
#define TCR_MTE_FLAGS TCR_TBI1 | TCR_TBID1
+#else
+#define TCR_MTE_FLAGS 0
#endif
/*
* Default MAIR_EL1. MT_NORMAL_TAGGED is initially mapped as Normal memory and
- * changed during __cpu_setup to Normal Tagged if the system supports MTE.
+ * changed during mte_cpu_setup to Normal Tagged if the system supports MTE.
*/
#define MAIR_EL1_SET \
(MAIR_ATTRIDX(MAIR_ATTR_DEVICE_nGnRnE, MT_DEVICE_nGnRnE) | \
@@ -427,46 +429,8 @@ SYM_FUNC_START(__cpu_setup)
mov_q mair, MAIR_EL1_SET
mov_q tcr, TCR_TxSZ(VA_BITS) | TCR_CACHE_FLAGS | TCR_SMP_FLAGS | \
TCR_TG_FLAGS | TCR_KASLR_FLAGS | TCR_ASID16 | \
- TCR_TBI0 | TCR_A1 | TCR_KASAN_SW_FLAGS
-
-#ifdef CONFIG_ARM64_MTE
- /*
- * Update MAIR_EL1, GCR_EL1 and TFSR*_EL1 if MTE is supported
- * (ID_AA64PFR1_EL1[11:8] > 1).
- */
- mrs x10, ID_AA64PFR1_EL1
- ubfx x10, x10, #ID_AA64PFR1_MTE_SHIFT, #4
- cmp x10, #ID_AA64PFR1_MTE
- b.lt 1f
-
- /* Normal Tagged memory type at the corresponding MAIR index */
- mov x10, #MAIR_ATTR_NORMAL_TAGGED
- bfi mair, x10, #(8 * MT_NORMAL_TAGGED), #8
+ TCR_TBI0 | TCR_A1 | TCR_KASAN_SW_FLAGS | TCR_MTE_FLAGS
- mov x10, #KERNEL_GCR_EL1
- msr_s SYS_GCR_EL1, x10
-
- /*
- * If GCR_EL1.RRND=1 is implemented the same way as RRND=0, then
- * RGSR_EL1.SEED must be non-zero for IRG to produce
- * pseudorandom numbers. As RGSR_EL1 is UNKNOWN out of reset, we
- * must initialize it.
- */
- mrs x10, CNTVCT_EL0
- ands x10, x10, #SYS_RGSR_EL1_SEED_MASK
- csinc x10, x10, xzr, ne
- lsl x10, x10, #SYS_RGSR_EL1_SEED_SHIFT
- msr_s SYS_RGSR_EL1, x10
-
- /* clear any pending tag check faults in TFSR*_EL1 */
- msr_s SYS_TFSR_EL1, xzr
- msr_s SYS_TFSRE0_EL1, xzr
-
- /* set the TCR_EL1 bits */
- mov_q x10, TCR_MTE_FLAGS
- orr tcr, tcr, x10
-1:
-#endif
tcr_clear_errata_bits tcr, x9, x5
#ifdef CONFIG_ARM64_VA_BITS_52
diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps
index 63b2484ce6c3..f1c0347ec31a 100644
--- a/arch/arm64/tools/cpucaps
+++ b/arch/arm64/tools/cpucaps
@@ -2,6 +2,8 @@
#
# Internal CPU capabilities constants, keep this list sorted
+ALWAYS_BOOT
+ALWAYS_SYSTEM
BTI
# Unreliable: use system_supports_32bit_el0() instead.
HAS_32BIT_EL0_DO_NOT_USE
@@ -68,6 +70,7 @@ WORKAROUND_2038923
WORKAROUND_2064142
WORKAROUND_2077057
WORKAROUND_2457168
+WORKAROUND_2658417
WORKAROUND_TRBE_OVERWRITE_FILL_MODE
WORKAROUND_TSB_FLUSH_FAILURE
WORKAROUND_TRBE_WRITE_OUT_OF_RANGE
diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index 9ae483ec1e56..7f1fb36f208c 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -46,6 +46,127 @@
# feature that introduces them (eg, FEAT_LS64_ACCDATA introduces enumeration
# item ACCDATA) though it may be more taseful to do something else.
+Sysreg ID_AA64PFR0_EL1 3 0 0 4 0
+Enum 63:60 CSV3
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 59:56 CSV2
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0010 CSV2_2
+ 0b0011 CSV2_3
+EndEnum
+Enum 55:52 RME
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 51:48 DIT
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 47:44 AMU
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0010 V1P1
+EndEnum
+Enum 43:40 MPAM
+ 0b0000 0
+ 0b0001 1
+EndEnum
+Enum 39:36 SEL2
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 35:32 SVE
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 31:28 RAS
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0010 V1P1
+EndEnum
+Enum 27:24 GIC
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0010 V4P1
+EndEnum
+Enum 23:20 AdvSIMD
+ 0b0000 IMP
+ 0b0001 FP16
+ 0b1111 NI
+EndEnum
+Enum 19:16 FP
+ 0b0000 IMP
+ 0b0001 FP16
+ 0b1111 NI
+EndEnum
+Enum 15:12 EL3
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0010 AARCH32
+EndEnum
+Enum 11:8 EL2
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0010 AARCH32
+EndEnum
+Enum 7:4 EL1
+ 0b0001 IMP
+ 0b0010 AARCH32
+EndEnum
+Enum 3:0 EL0
+ 0b0001 IMP
+ 0b0010 AARCH32
+EndEnum
+EndSysreg
+
+Sysreg ID_AA64PFR1_EL1 3 0 0 4 1
+Res0 63:40
+Enum 39:36 NMI
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 35:32 CSV2_frac
+ 0b0000 NI
+ 0b0001 CSV2_1p1
+ 0b0010 CSV2_1p2
+EndEnum
+Enum 31:28 RNDR_trap
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 27:24 SME
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Res0 23:20
+Enum 19:16 MPAM_frac
+ 0b0000 MINOR_0
+ 0b0001 MINOR_1
+EndEnum
+Enum 15:12 RAS_frac
+ 0b0000 NI
+ 0b0001 RASv1p1
+EndEnum
+Enum 11:8 MTE
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0010 MTE2
+ 0b0011 MTE3
+EndEnum
+Enum 7:4 SSBS
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0010 SSBS2
+EndEnum
+Enum 3:0 BT
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+EndSysreg
+
Sysreg ID_AA64ZFR0_EL1 3 0 0 4 4
Res0 63:60
Enum 59:56 F64MM
@@ -98,7 +219,9 @@ Enum 63 FA64
0b1 IMP
EndEnum
Res0 62:60
-Field 59:56 SMEver
+Enum 59:56 SMEver
+ 0b0000 IMP
+EndEnum
Enum 55:52 I16I64
0b0000 NI
0b1111 IMP
@@ -129,6 +252,89 @@ EndEnum
Res0 31:0
EndSysreg
+Sysreg ID_AA64DFR0_EL1 3 0 0 5 0
+Enum 63:60 HPMN0
+ 0b0000 UNPREDICTABLE
+ 0b0001 DEF
+EndEnum
+Res0 59:56
+Enum 55:52 BRBE
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0010 BRBE_V1P1
+EndEnum
+Enum 51:48 MTPMU
+ 0b0000 NI_IMPDEF
+ 0b0001 IMP
+ 0b1111 NI
+EndEnum
+Enum 47:44 TraceBuffer
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 43:40 TraceFilt
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 39:36 DoubleLock
+ 0b0000 IMP
+ 0b1111 NI
+EndEnum
+Enum 35:32 PMSVer
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0010 V1P1
+ 0b0011 V1P2
+ 0b0100 V1P3
+EndEnum
+Field 31:28 CTX_CMPs
+Res0 27:24
+Field 23:20 WRPs
+Res0 19:16
+Field 15:12 BRPs
+Enum 11:8 PMUVer
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0100 V3P1
+ 0b0101 V3P4
+ 0b0110 V3P5
+ 0b0111 V3P7
+ 0b1000 V3P8
+ 0b1111 IMP_DEF
+EndEnum
+Enum 7:4 TraceVer
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 3:0 DebugVer
+ 0b0110 IMP
+ 0b0111 VHE
+ 0b1000 V8P2
+ 0b1001 V8P4
+ 0b1010 V8P8
+EndEnum
+EndSysreg
+
+Sysreg ID_AA64DFR1_EL1 3 0 0 5 1
+Res0 63:0
+EndSysreg
+
+Sysreg ID_AA64AFR0_EL1 3 0 0 5 4
+Res0 63:32
+Field 31:28 IMPDEF7
+Field 27:24 IMPDEF6
+Field 23:20 IMPDEF5
+Field 19:16 IMPDEF4
+Field 15:12 IMPDEF3
+Field 11:8 IMPDEF2
+Field 7:4 IMPDEF1
+Field 3:0 IMPDEF0
+EndSysreg
+
+Sysreg ID_AA64AFR1_EL1 3 0 0 5 5
+Res0 63:0
+EndSysreg
+
Sysreg ID_AA64ISAR0_EL1 3 0 0 6 0
Enum 63:60 RNDR
0b0000 NI
@@ -313,6 +519,217 @@ Enum 3:0 WFxT
EndEnum
EndSysreg
+Sysreg ID_AA64MMFR0_EL1 3 0 0 7 0
+Enum 63:60 ECV
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0010 CNTPOFF
+EndEnum
+Enum 59:56 FGT
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Res0 55:48
+Enum 47:44 EXS
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 43:40 TGRAN4_2
+ 0b0000 TGRAN4
+ 0b0001 NI
+ 0b0010 IMP
+ 0b0011 52_BIT
+EndEnum
+Enum 39:36 TGRAN64_2
+ 0b0000 TGRAN64
+ 0b0001 NI
+ 0b0010 IMP
+EndEnum
+Enum 35:32 TGRAN16_2
+ 0b0000 TGRAN16
+ 0b0001 NI
+ 0b0010 IMP
+ 0b0011 52_BIT
+EndEnum
+Enum 31:28 TGRAN4
+ 0b0000 IMP
+ 0b0001 52_BIT
+ 0b1111 NI
+EndEnum
+Enum 27:24 TGRAN64
+ 0b0000 IMP
+ 0b1111 NI
+EndEnum
+Enum 23:20 TGRAN16
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0010 52_BIT
+EndEnum
+Enum 19:16 BIGENDEL0
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 15:12 SNSMEM
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 11:8 BIGEND
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 7:4 ASIDBITS
+ 0b0000 8
+ 0b0010 16
+EndEnum
+Enum 3:0 PARANGE
+ 0b0000 32
+ 0b0001 36
+ 0b0010 40
+ 0b0011 42
+ 0b0100 44
+ 0b0101 48
+ 0b0110 52
+EndEnum
+EndSysreg
+
+Sysreg ID_AA64MMFR1_EL1 3 0 0 7 1
+Enum 63:60 ECBHB
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 59:56 CMOW
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 55:52 TIDCP1
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 51:48 nTLBPA
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 47:44 AFP
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 43:40 HCX
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 39:36 ETS
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 35:32 TWED
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 31:28 XNX
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 27:24 SpecSEI
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 23:20 PAN
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0010 PAN2
+ 0b0011 PAN3
+EndEnum
+Enum 19:16 LO
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 15:12 HPDS
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0010 HPDS2
+EndEnum
+Enum 11:8 VH
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 7:4 VMIDBits
+ 0b0000 8
+ 0b0010 16
+EndEnum
+Enum 3:0 HAFDBS
+ 0b0000 NI
+ 0b0001 AF
+ 0b0010 DBM
+EndEnum
+EndSysreg
+
+Sysreg ID_AA64MMFR2_EL1 3 0 0 7 2
+Enum 63:60 E0PD
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 59:56 EVT
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0010 TTLBxS
+EndEnum
+Enum 55:52 BBM
+ 0b0000 0
+ 0b0001 1
+ 0b0010 2
+EndEnum
+Enum 51:48 TTL
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Res0 47:44
+Enum 43:40 FWB
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 39:36 IDS
+ 0b0000 0x0
+ 0b0001 0x18
+EndEnum
+Enum 35:32 AT
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 31:28 ST
+ 0b0000 39
+ 0b0001 48_47
+EndEnum
+Enum 27:24 NV
+ 0b0000 NI
+ 0b0001 IMP
+ 0b0010 NV2
+EndEnum
+Enum 23:20 CCIDX
+ 0b0000 32
+ 0b0001 64
+EndEnum
+Enum 19:16 VARange
+ 0b0000 48
+ 0b0001 52
+EndEnum
+Enum 15:12 IESB
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 11:8 LSM
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 7:4 UAO
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+Enum 3:0 CnP
+ 0b0000 NI
+ 0b0001 IMP
+EndEnum
+EndSysreg
+
Sysreg SCTLR_EL1 3 0 1 0 0
Field 63 TIDCP
Field 62 SPINMASK
@@ -427,6 +844,12 @@ Sysreg SMCR_EL1 3 0 1 2 6
Fields SMCR_ELx
EndSysreg
+Sysreg ALLINT 3 0 4 3 0
+Res0 63:14
+Field 13 ALLINT
+Res0 12:0
+EndSysreg
+
Sysreg FAR_EL1 3 0 6 0 0
Field 63:0 ADDR
EndSysreg
@@ -440,6 +863,14 @@ Sysreg CONTEXTIDR_EL1 3 0 13 0 1
Fields CONTEXTIDR_ELx
EndSysreg
+Sysreg TPIDR_EL1 3 0 13 0 4
+Field 63:0 ThreadID
+EndSysreg
+
+Sysreg SCXTNUM_EL1 3 0 13 0 7
+Field 63:0 SoftwareContextNumber
+EndSysreg
+
Sysreg CLIDR_EL1 3 1 0 0 1
Res0 63:47
Field 46:33 Ttypen
@@ -514,6 +945,22 @@ Sysreg ZCR_EL2 3 4 1 2 0
Fields ZCR_ELx
EndSysreg
+Sysreg HCRX_EL2 3 4 1 2 2
+Res0 63:12
+Field 11 MSCEn
+Field 10 MCE2
+Field 9 CMOW
+Field 8 VFNMI
+Field 7 VINMI
+Field 6 TALLINT
+Field 5 SMPME
+Field 4 FGTnXS
+Field 3 FnXS
+Field 2 EnASR
+Field 1 EnALS
+Field 0 EnAS0
+EndSysreg
+
Sysreg SMPRIMAP_EL2 3 4 1 2 5
Field 63:60 P15
Field 59:56 P14