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-rw-r--r--arch/s390/kernel/Makefile2
-rw-r--r--arch/s390/kernel/cpcmd.c6
-rw-r--r--arch/s390/kernel/dis.c2
-rw-r--r--arch/s390/kernel/dumpstack.c12
-rw-r--r--arch/s390/kernel/entry.S7
-rw-r--r--arch/s390/kernel/entry.h25
-rw-r--r--arch/s390/kernel/ipl.c4
-rw-r--r--arch/s390/kernel/irq.c2
-rw-r--r--arch/s390/kernel/os_info.c2
-rw-r--r--arch/s390/kernel/perf_cpum_cf_diag.c3
-rw-r--r--arch/s390/kernel/perf_event.c21
-rw-r--r--arch/s390/kernel/pgm_check.S147
-rw-r--r--arch/s390/kernel/setup.c2
-rw-r--r--arch/s390/kernel/smp.c1
-rw-r--r--arch/s390/kernel/stacktrace.c6
-rw-r--r--arch/s390/kernel/syscalls/syscall.tbl4
-rw-r--r--arch/s390/kernel/time.c10
-rw-r--r--arch/s390/kernel/traps.c76
-rw-r--r--arch/s390/kernel/uv.c47
-rw-r--r--arch/s390/kernel/vtime.c2
20 files changed, 155 insertions, 226 deletions
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index c97818a382f3..68ca1834316f 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -36,7 +36,7 @@ CFLAGS_unwind_bc.o += -fno-optimize-sibling-calls
obj-y := traps.o time.o process.o base.o early.o setup.o idle.o vtime.o
obj-y += processor.o syscall.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o
obj-y += debug.o irq.o ipl.o dis.o diag.o vdso.o
-obj-y += sysinfo.o lgr.o os_info.o machine_kexec.o pgm_check.o
+obj-y += sysinfo.o lgr.o os_info.o machine_kexec.o
obj-y += runtime_instr.o cache.o fpu.o dumpstack.o guarded_storage.o sthyi.o
obj-y += entry.o reipl.o relocate_kernel.o kdebugfs.o alternative.o
obj-y += nospec-branch.o ipl_vmparm.o machine_kexec_reloc.o unwind_bc.o
diff --git a/arch/s390/kernel/cpcmd.c b/arch/s390/kernel/cpcmd.c
index af013b4244d3..2da027359798 100644
--- a/arch/s390/kernel/cpcmd.c
+++ b/arch/s390/kernel/cpcmd.c
@@ -37,10 +37,12 @@ static int diag8_noresponse(int cmdlen)
static int diag8_response(int cmdlen, char *response, int *rlen)
{
+ unsigned long _cmdlen = cmdlen | 0x40000000L;
+ unsigned long _rlen = *rlen;
register unsigned long reg2 asm ("2") = (addr_t) cpcmd_buf;
register unsigned long reg3 asm ("3") = (addr_t) response;
- register unsigned long reg4 asm ("4") = cmdlen | 0x40000000L;
- register unsigned long reg5 asm ("5") = *rlen;
+ register unsigned long reg4 asm ("4") = _cmdlen;
+ register unsigned long reg5 asm ("5") = _rlen;
asm volatile(
" diag %2,%0,0x8\n"
diff --git a/arch/s390/kernel/dis.c b/arch/s390/kernel/dis.c
index a7eab7be4db0..5412efe328f8 100644
--- a/arch/s390/kernel/dis.c
+++ b/arch/s390/kernel/dis.c
@@ -563,7 +563,7 @@ void show_code(struct pt_regs *regs)
void print_fn_code(unsigned char *code, unsigned long len)
{
- char buffer[64], *ptr;
+ char buffer[128], *ptr;
int opsize, i;
while (len) {
diff --git a/arch/s390/kernel/dumpstack.c b/arch/s390/kernel/dumpstack.c
index 0dc4b258b98d..db1bc00229ca 100644
--- a/arch/s390/kernel/dumpstack.c
+++ b/arch/s390/kernel/dumpstack.c
@@ -79,6 +79,15 @@ static bool in_nodat_stack(unsigned long sp, struct stack_info *info)
return in_stack(sp, info, STACK_TYPE_NODAT, top - THREAD_SIZE, top);
}
+static bool in_mcck_stack(unsigned long sp, struct stack_info *info)
+{
+ unsigned long frame_size, top;
+
+ frame_size = STACK_FRAME_OVERHEAD + sizeof(struct pt_regs);
+ top = S390_lowcore.mcck_stack + frame_size;
+ return in_stack(sp, info, STACK_TYPE_MCCK, top - THREAD_SIZE, top);
+}
+
static bool in_restart_stack(unsigned long sp, struct stack_info *info)
{
unsigned long frame_size, top;
@@ -108,7 +117,8 @@ int get_stack_info(unsigned long sp, struct task_struct *task,
/* Check per-cpu stacks */
if (!in_irq_stack(sp, info) &&
!in_nodat_stack(sp, info) &&
- !in_restart_stack(sp, info))
+ !in_restart_stack(sp, info) &&
+ !in_mcck_stack(sp, info))
goto unknown;
recursion_check:
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index c10b9f31eef7..12de7a9c85b3 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -401,15 +401,13 @@ ENTRY(\name)
brasl %r14,.Lcleanup_sie_int
#endif
0: CHECK_STACK __LC_SAVE_AREA_ASYNC
- lgr %r11,%r15
aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
- stg %r11,__SF_BACKCHAIN(%r15)
j 2f
1: BPENTER __TI_flags(%r12),_TIF_ISOLATE_BP
lctlg %c1,%c1,__LC_KERNEL_ASCE
lg %r15,__LC_KERNEL_STACK
- xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
-2: la %r11,STACK_FRAME_OVERHEAD(%r15)
+2: xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
+ la %r11,STACK_FRAME_OVERHEAD(%r15)
stmg %r0,%r7,__PT_R0(%r11)
# clear user controlled registers to prevent speculative use
xgr %r0,%r0
@@ -445,6 +443,7 @@ INT_HANDLER io_int_handler,__LC_IO_OLD_PSW,do_io_irq
* Load idle PSW.
*/
ENTRY(psw_idle)
+ stg %r14,(__SF_GPRS+8*8)(%r15)
stg %r3,__SF_EMPTY(%r15)
larl %r1,psw_idle_exit
stg %r1,__SF_EMPTY+8(%r15)
diff --git a/arch/s390/kernel/entry.h b/arch/s390/kernel/entry.h
index 3d0c0ac5c20e..1ab33465382f 100644
--- a/arch/s390/kernel/entry.h
+++ b/arch/s390/kernel/entry.h
@@ -26,29 +26,6 @@ void do_dat_exception(struct pt_regs *regs);
void do_secure_storage_access(struct pt_regs *regs);
void do_non_secure_storage_access(struct pt_regs *regs);
void do_secure_storage_violation(struct pt_regs *regs);
-
-void addressing_exception(struct pt_regs *regs);
-void data_exception(struct pt_regs *regs);
-void default_trap_handler(struct pt_regs *regs);
-void divide_exception(struct pt_regs *regs);
-void execute_exception(struct pt_regs *regs);
-void hfp_divide_exception(struct pt_regs *regs);
-void hfp_overflow_exception(struct pt_regs *regs);
-void hfp_significance_exception(struct pt_regs *regs);
-void hfp_sqrt_exception(struct pt_regs *regs);
-void hfp_underflow_exception(struct pt_regs *regs);
-void illegal_op(struct pt_regs *regs);
-void operand_exception(struct pt_regs *regs);
-void overflow_exception(struct pt_regs *regs);
-void privileged_op(struct pt_regs *regs);
-void space_switch_exception(struct pt_regs *regs);
-void special_op_exception(struct pt_regs *regs);
-void specification_exception(struct pt_regs *regs);
-void transaction_exception(struct pt_regs *regs);
-void translation_exception(struct pt_regs *regs);
-void vector_exception(struct pt_regs *regs);
-void monitor_event_exception(struct pt_regs *regs);
-
void do_report_trap(struct pt_regs *regs, int si_signo, int si_code, char *str);
void kernel_stack_overflow(struct pt_regs * regs);
void do_signal(struct pt_regs *regs);
@@ -59,7 +36,7 @@ void do_notify_resume(struct pt_regs *regs);
void __init init_IRQ(void);
void do_io_irq(struct pt_regs *regs);
void do_ext_irq(struct pt_regs *regs);
-void do_restart(void);
+void do_restart(void *arg);
void __init startup_init(void);
void die(struct pt_regs *regs, const char *str);
int setup_profiling_timer(unsigned int multiplier);
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 7a21eca498aa..dba04fbc37a2 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -1849,12 +1849,12 @@ static void __do_restart(void *ignore)
stop_run(&on_restart_trigger);
}
-void do_restart(void)
+void do_restart(void *arg)
{
tracing_off();
debug_locks_off();
lgr_info_log();
- smp_call_online_cpu(__do_restart, NULL);
+ smp_call_online_cpu(__do_restart, arg);
}
/* on halt */
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index 601c21791338..714269e10eec 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -174,7 +174,7 @@ void noinstr do_ext_irq(struct pt_regs *regs)
memcpy(&regs->int_code, &S390_lowcore.ext_cpu_addr, 4);
regs->int_parm = S390_lowcore.ext_params;
- regs->int_parm_long = *(unsigned long *)S390_lowcore.ext_params2;
+ regs->int_parm_long = S390_lowcore.ext_params2;
from_idle = !user_mode(regs) && regs->psw.addr == (unsigned long)psw_idle_exit;
if (from_idle)
diff --git a/arch/s390/kernel/os_info.c b/arch/s390/kernel/os_info.c
index 0a5e4bafb6ad..5a7420b23aa8 100644
--- a/arch/s390/kernel/os_info.c
+++ b/arch/s390/kernel/os_info.c
@@ -52,7 +52,7 @@ void os_info_entry_add(int nr, void *ptr, u64 size)
}
/*
- * Initialize OS info struture and set lowcore pointer
+ * Initialize OS info structure and set lowcore pointer
*/
void __init os_info_init(void)
{
diff --git a/arch/s390/kernel/perf_cpum_cf_diag.c b/arch/s390/kernel/perf_cpum_cf_diag.c
index bc302b86ce28..2e3e7edbe3a0 100644
--- a/arch/s390/kernel/perf_cpum_cf_diag.c
+++ b/arch/s390/kernel/perf_cpum_cf_diag.c
@@ -968,7 +968,7 @@ static int cf_diag_all_start(void)
*/
static size_t cf_diag_needspace(unsigned int sets)
{
- struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
+ struct cpu_cf_events *cpuhw = get_cpu_ptr(&cpu_cf_events);
size_t bytes = 0;
int i;
@@ -984,6 +984,7 @@ static size_t cf_diag_needspace(unsigned int sets)
sizeof(((struct s390_ctrset_cpudata *)0)->no_sets));
debug_sprintf_event(cf_diag_dbg, 5, "%s bytes %ld\n", __func__,
bytes);
+ put_cpu_ptr(&cpu_cf_events);
return bytes;
}
diff --git a/arch/s390/kernel/perf_event.c b/arch/s390/kernel/perf_event.c
index 1e75cc983546..ea7729bebaa0 100644
--- a/arch/s390/kernel/perf_event.c
+++ b/arch/s390/kernel/perf_event.c
@@ -23,27 +23,6 @@
#include <asm/sysinfo.h>
#include <asm/unwind.h>
-const char *perf_pmu_name(void)
-{
- if (cpum_cf_avail() || cpum_sf_avail())
- return "CPU-Measurement Facilities (CPU-MF)";
- return "pmu";
-}
-EXPORT_SYMBOL(perf_pmu_name);
-
-int perf_num_counters(void)
-{
- int num = 0;
-
- if (cpum_cf_avail())
- num += PERF_CPUM_CF_MAX_CTR;
- if (cpum_sf_avail())
- num += PERF_CPUM_SF_MAX_CTR;
-
- return num;
-}
-EXPORT_SYMBOL(perf_num_counters);
-
static struct kvm_s390_sie_block *sie_block(struct pt_regs *regs)
{
struct stack_frame *stack = (struct stack_frame *) regs->gprs[15];
diff --git a/arch/s390/kernel/pgm_check.S b/arch/s390/kernel/pgm_check.S
deleted file mode 100644
index 9a92638360ee..000000000000
--- a/arch/s390/kernel/pgm_check.S
+++ /dev/null
@@ -1,147 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Program check table.
- *
- * Copyright IBM Corp. 2012
- */
-
-#include <linux/linkage.h>
-
-#define PGM_CHECK(handler) .quad handler
-#define PGM_CHECK_DEFAULT PGM_CHECK(default_trap_handler)
-
-/*
- * The program check table contains exactly 128 (0x00-0x7f) entries. Each
- * line defines the function to be called corresponding to the program check
- * interruption code.
- */
-.section .rodata, "a"
-ENTRY(pgm_check_table)
-PGM_CHECK_DEFAULT /* 00 */
-PGM_CHECK(illegal_op) /* 01 */
-PGM_CHECK(privileged_op) /* 02 */
-PGM_CHECK(execute_exception) /* 03 */
-PGM_CHECK(do_protection_exception) /* 04 */
-PGM_CHECK(addressing_exception) /* 05 */
-PGM_CHECK(specification_exception) /* 06 */
-PGM_CHECK(data_exception) /* 07 */
-PGM_CHECK(overflow_exception) /* 08 */
-PGM_CHECK(divide_exception) /* 09 */
-PGM_CHECK(overflow_exception) /* 0a */
-PGM_CHECK(divide_exception) /* 0b */
-PGM_CHECK(hfp_overflow_exception) /* 0c */
-PGM_CHECK(hfp_underflow_exception) /* 0d */
-PGM_CHECK(hfp_significance_exception) /* 0e */
-PGM_CHECK(hfp_divide_exception) /* 0f */
-PGM_CHECK(do_dat_exception) /* 10 */
-PGM_CHECK(do_dat_exception) /* 11 */
-PGM_CHECK(translation_exception) /* 12 */
-PGM_CHECK(special_op_exception) /* 13 */
-PGM_CHECK_DEFAULT /* 14 */
-PGM_CHECK(operand_exception) /* 15 */
-PGM_CHECK_DEFAULT /* 16 */
-PGM_CHECK_DEFAULT /* 17 */
-PGM_CHECK(transaction_exception) /* 18 */
-PGM_CHECK_DEFAULT /* 19 */
-PGM_CHECK_DEFAULT /* 1a */
-PGM_CHECK(vector_exception) /* 1b */
-PGM_CHECK(space_switch_exception) /* 1c */
-PGM_CHECK(hfp_sqrt_exception) /* 1d */
-PGM_CHECK_DEFAULT /* 1e */
-PGM_CHECK_DEFAULT /* 1f */
-PGM_CHECK_DEFAULT /* 20 */
-PGM_CHECK_DEFAULT /* 21 */
-PGM_CHECK_DEFAULT /* 22 */
-PGM_CHECK_DEFAULT /* 23 */
-PGM_CHECK_DEFAULT /* 24 */
-PGM_CHECK_DEFAULT /* 25 */
-PGM_CHECK_DEFAULT /* 26 */
-PGM_CHECK_DEFAULT /* 27 */
-PGM_CHECK_DEFAULT /* 28 */
-PGM_CHECK_DEFAULT /* 29 */
-PGM_CHECK_DEFAULT /* 2a */
-PGM_CHECK_DEFAULT /* 2b */
-PGM_CHECK_DEFAULT /* 2c */
-PGM_CHECK_DEFAULT /* 2d */
-PGM_CHECK_DEFAULT /* 2e */
-PGM_CHECK_DEFAULT /* 2f */
-PGM_CHECK_DEFAULT /* 30 */
-PGM_CHECK_DEFAULT /* 31 */
-PGM_CHECK_DEFAULT /* 32 */
-PGM_CHECK_DEFAULT /* 33 */
-PGM_CHECK_DEFAULT /* 34 */
-PGM_CHECK_DEFAULT /* 35 */
-PGM_CHECK_DEFAULT /* 36 */
-PGM_CHECK_DEFAULT /* 37 */
-PGM_CHECK(do_dat_exception) /* 38 */
-PGM_CHECK(do_dat_exception) /* 39 */
-PGM_CHECK(do_dat_exception) /* 3a */
-PGM_CHECK(do_dat_exception) /* 3b */
-PGM_CHECK_DEFAULT /* 3c */
-PGM_CHECK(do_secure_storage_access) /* 3d */
-PGM_CHECK(do_non_secure_storage_access) /* 3e */
-PGM_CHECK(do_secure_storage_violation) /* 3f */
-PGM_CHECK(monitor_event_exception) /* 40 */
-PGM_CHECK_DEFAULT /* 41 */
-PGM_CHECK_DEFAULT /* 42 */
-PGM_CHECK_DEFAULT /* 43 */
-PGM_CHECK_DEFAULT /* 44 */
-PGM_CHECK_DEFAULT /* 45 */
-PGM_CHECK_DEFAULT /* 46 */
-PGM_CHECK_DEFAULT /* 47 */
-PGM_CHECK_DEFAULT /* 48 */
-PGM_CHECK_DEFAULT /* 49 */
-PGM_CHECK_DEFAULT /* 4a */
-PGM_CHECK_DEFAULT /* 4b */
-PGM_CHECK_DEFAULT /* 4c */
-PGM_CHECK_DEFAULT /* 4d */
-PGM_CHECK_DEFAULT /* 4e */
-PGM_CHECK_DEFAULT /* 4f */
-PGM_CHECK_DEFAULT /* 50 */
-PGM_CHECK_DEFAULT /* 51 */
-PGM_CHECK_DEFAULT /* 52 */
-PGM_CHECK_DEFAULT /* 53 */
-PGM_CHECK_DEFAULT /* 54 */
-PGM_CHECK_DEFAULT /* 55 */
-PGM_CHECK_DEFAULT /* 56 */
-PGM_CHECK_DEFAULT /* 57 */
-PGM_CHECK_DEFAULT /* 58 */
-PGM_CHECK_DEFAULT /* 59 */
-PGM_CHECK_DEFAULT /* 5a */
-PGM_CHECK_DEFAULT /* 5b */
-PGM_CHECK_DEFAULT /* 5c */
-PGM_CHECK_DEFAULT /* 5d */
-PGM_CHECK_DEFAULT /* 5e */
-PGM_CHECK_DEFAULT /* 5f */
-PGM_CHECK_DEFAULT /* 60 */
-PGM_CHECK_DEFAULT /* 61 */
-PGM_CHECK_DEFAULT /* 62 */
-PGM_CHECK_DEFAULT /* 63 */
-PGM_CHECK_DEFAULT /* 64 */
-PGM_CHECK_DEFAULT /* 65 */
-PGM_CHECK_DEFAULT /* 66 */
-PGM_CHECK_DEFAULT /* 67 */
-PGM_CHECK_DEFAULT /* 68 */
-PGM_CHECK_DEFAULT /* 69 */
-PGM_CHECK_DEFAULT /* 6a */
-PGM_CHECK_DEFAULT /* 6b */
-PGM_CHECK_DEFAULT /* 6c */
-PGM_CHECK_DEFAULT /* 6d */
-PGM_CHECK_DEFAULT /* 6e */
-PGM_CHECK_DEFAULT /* 6f */
-PGM_CHECK_DEFAULT /* 70 */
-PGM_CHECK_DEFAULT /* 71 */
-PGM_CHECK_DEFAULT /* 72 */
-PGM_CHECK_DEFAULT /* 73 */
-PGM_CHECK_DEFAULT /* 74 */
-PGM_CHECK_DEFAULT /* 75 */
-PGM_CHECK_DEFAULT /* 76 */
-PGM_CHECK_DEFAULT /* 77 */
-PGM_CHECK_DEFAULT /* 78 */
-PGM_CHECK_DEFAULT /* 79 */
-PGM_CHECK_DEFAULT /* 7a */
-PGM_CHECK_DEFAULT /* 7b */
-PGM_CHECK_DEFAULT /* 7c */
-PGM_CHECK_DEFAULT /* 7d */
-PGM_CHECK_DEFAULT /* 7e */
-PGM_CHECK_DEFAULT /* 7f */
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 60da976eee6f..72134f9f6ff5 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -354,7 +354,7 @@ static int __init stack_realloc(void)
if (!new)
panic("Couldn't allocate machine check stack");
WRITE_ONCE(S390_lowcore.mcck_stack, new + STACK_INIT_OFFSET);
- memblock_free(old, THREAD_SIZE);
+ memblock_free_late(old, THREAD_SIZE);
return 0;
}
early_initcall(stack_realloc);
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 58c8afa3da65..2fec2b80d35d 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -429,6 +429,7 @@ void notrace smp_yield_cpu(int cpu)
asm volatile("diag %0,0,0x9c"
: : "d" (pcpu_devices[cpu].address));
}
+EXPORT_SYMBOL_GPL(smp_yield_cpu);
/*
* Send cpus emergency shutdown signal. This gives the cpus the
diff --git a/arch/s390/kernel/stacktrace.c b/arch/s390/kernel/stacktrace.c
index 7f1266c24f6b..101477b3e263 100644
--- a/arch/s390/kernel/stacktrace.c
+++ b/arch/s390/kernel/stacktrace.c
@@ -24,12 +24,6 @@ void arch_stack_walk(stack_trace_consume_fn consume_entry, void *cookie,
}
}
-/*
- * This function returns an error if it detects any unreliable features of the
- * stack. Otherwise it guarantees that the stack trace is reliable.
- *
- * If the task is not 'current', the caller *must* ensure the task is inactive.
- */
int arch_stack_walk_reliable(stack_trace_consume_fn consume_entry,
void *cookie, struct task_struct *task)
{
diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl
index 3abef2144dac..7e4a2aba366d 100644
--- a/arch/s390/kernel/syscalls/syscall.tbl
+++ b/arch/s390/kernel/syscalls/syscall.tbl
@@ -445,3 +445,7 @@
440 common process_madvise sys_process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2 compat_sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr sys_mount_setattr
+443 common quotactl_path sys_quotactl_path sys_quotactl_path
+444 common landlock_create_ruleset sys_landlock_create_ruleset sys_landlock_create_ruleset
+445 common landlock_add_rule sys_landlock_add_rule sys_landlock_add_rule
+446 common landlock_restrict_self sys_landlock_restrict_self sys_landlock_restrict_self
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 165da961f901..326cb8f75f58 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -80,10 +80,12 @@ void __init time_early_init(void)
{
struct ptff_qto qto;
struct ptff_qui qui;
+ int cs;
/* Initialize TOD steering parameters */
tod_steering_end = tod_clock_base.tod;
- vdso_data->arch_data.tod_steering_end = tod_steering_end;
+ for (cs = 0; cs < CS_BASES; cs++)
+ vdso_data[cs].arch_data.tod_steering_end = tod_steering_end;
if (!test_facility(28))
return;
@@ -366,6 +368,7 @@ static void clock_sync_global(unsigned long delta)
{
unsigned long now, adj;
struct ptff_qto qto;
+ int cs;
/* Fixup the monotonic sched clock. */
tod_clock_base.eitod += delta;
@@ -381,7 +384,10 @@ static void clock_sync_global(unsigned long delta)
panic("TOD clock sync offset %li is too large to drift\n",
tod_steering_delta);
tod_steering_end = now + (abs(tod_steering_delta) << 15);
- vdso_data->arch_data.tod_steering_end = tod_steering_end;
+ for (cs = 0; cs < CS_BASES; cs++) {
+ vdso_data[cs].arch_data.tod_steering_end = tod_steering_end;
+ vdso_data[cs].arch_data.tod_steering_delta = tod_steering_delta;
+ }
/* Update LPAR offset. */
if (ptff_query(PTFF_QTO) && ptff(&qto, sizeof(qto), PTFF_QTO) == 0)
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index db7dd59b570c..63021d484626 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -79,7 +79,7 @@ void do_per_trap(struct pt_regs *regs)
}
NOKPROBE_SYMBOL(do_per_trap);
-void default_trap_handler(struct pt_regs *regs)
+static void default_trap_handler(struct pt_regs *regs)
{
if (user_mode(regs)) {
report_user_fault(regs, SIGSEGV, 0);
@@ -89,7 +89,7 @@ void default_trap_handler(struct pt_regs *regs)
}
#define DO_ERROR_INFO(name, signr, sicode, str) \
-void name(struct pt_regs *regs) \
+static void name(struct pt_regs *regs) \
{ \
do_trap(regs, signr, sicode, str); \
}
@@ -141,13 +141,13 @@ static inline void do_fp_trap(struct pt_regs *regs, __u32 fpc)
do_trap(regs, SIGFPE, si_code, "floating point exception");
}
-void translation_exception(struct pt_regs *regs)
+static void translation_exception(struct pt_regs *regs)
{
/* May never happen. */
panic("Translation exception");
}
-void illegal_op(struct pt_regs *regs)
+static void illegal_op(struct pt_regs *regs)
{
__u8 opcode[6];
__u16 __user *location;
@@ -189,7 +189,7 @@ NOKPROBE_SYMBOL(illegal_op);
DO_ERROR_INFO(specification_exception, SIGILL, ILL_ILLOPN,
"specification exception");
-void vector_exception(struct pt_regs *regs)
+static void vector_exception(struct pt_regs *regs)
{
int si_code, vic;
@@ -223,7 +223,7 @@ void vector_exception(struct pt_regs *regs)
do_trap(regs, SIGFPE, si_code, "vector exception");
}
-void data_exception(struct pt_regs *regs)
+static void data_exception(struct pt_regs *regs)
{
save_fpu_regs();
if (current->thread.fpu.fpc & FPC_DXC_MASK)
@@ -232,7 +232,7 @@ void data_exception(struct pt_regs *regs)
do_trap(regs, SIGILL, ILL_ILLOPN, "data exception");
}
-void space_switch_exception(struct pt_regs *regs)
+static void space_switch_exception(struct pt_regs *regs)
{
/* Set user psw back to home space mode. */
if (user_mode(regs))
@@ -241,7 +241,7 @@ void space_switch_exception(struct pt_regs *regs)
do_trap(regs, SIGILL, ILL_PRVOPC, "space switch event");
}
-void monitor_event_exception(struct pt_regs *regs)
+static void monitor_event_exception(struct pt_regs *regs)
{
const struct exception_table_entry *fixup;
@@ -293,6 +293,8 @@ void __init trap_init(void)
test_monitor_call();
}
+static void (*pgm_check_table[128])(struct pt_regs *regs);
+
void noinstr __do_pgm_check(struct pt_regs *regs)
{
unsigned long last_break = S390_lowcore.breaking_event_addr;
@@ -353,3 +355,61 @@ out:
exit_to_user_mode();
}
}
+
+/*
+ * The program check table contains exactly 128 (0x00-0x7f) entries. Each
+ * line defines the function to be called corresponding to the program check
+ * interruption code.
+ */
+static void (*pgm_check_table[128])(struct pt_regs *regs) = {
+ [0x00] = default_trap_handler,
+ [0x01] = illegal_op,
+ [0x02] = privileged_op,
+ [0x03] = execute_exception,
+ [0x04] = do_protection_exception,
+ [0x05] = addressing_exception,
+ [0x06] = specification_exception,
+ [0x07] = data_exception,
+ [0x08] = overflow_exception,
+ [0x09] = divide_exception,
+ [0x0a] = overflow_exception,
+ [0x0b] = divide_exception,
+ [0x0c] = hfp_overflow_exception,
+ [0x0d] = hfp_underflow_exception,
+ [0x0e] = hfp_significance_exception,
+ [0x0f] = hfp_divide_exception,
+ [0x10] = do_dat_exception,
+ [0x11] = do_dat_exception,
+ [0x12] = translation_exception,
+ [0x13] = special_op_exception,
+ [0x14] = default_trap_handler,
+ [0x15] = operand_exception,
+ [0x16] = default_trap_handler,
+ [0x17] = default_trap_handler,
+ [0x18] = transaction_exception,
+ [0x19] = default_trap_handler,
+ [0x1a] = default_trap_handler,
+ [0x1b] = vector_exception,
+ [0x1c] = space_switch_exception,
+ [0x1d] = hfp_sqrt_exception,
+ [0x1e ... 0x37] = default_trap_handler,
+ [0x38] = do_dat_exception,
+ [0x39] = do_dat_exception,
+ [0x3a] = do_dat_exception,
+ [0x3b] = do_dat_exception,
+ [0x3c] = default_trap_handler,
+ [0x3d] = do_secure_storage_access,
+ [0x3e] = do_non_secure_storage_access,
+ [0x3f] = do_secure_storage_violation,
+ [0x40] = monitor_event_exception,
+ [0x41 ... 0x7f] = default_trap_handler,
+};
+
+#define COND_TRAP(x) asm( \
+ ".weak " __stringify(x) "\n\t" \
+ ".set " __stringify(x) "," \
+ __stringify(default_trap_handler))
+
+COND_TRAP(do_secure_storage_access);
+COND_TRAP(do_non_secure_storage_access);
+COND_TRAP(do_secure_storage_violation);
diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c
index b2d2ad153067..370f664580af 100644
--- a/arch/s390/kernel/uv.c
+++ b/arch/s390/kernel/uv.c
@@ -406,6 +406,41 @@ static struct attribute_group uv_query_attr_group = {
.attrs = uv_query_attrs,
};
+static ssize_t uv_is_prot_virt_guest(struct kobject *kobj,
+ struct kobj_attribute *attr, char *page)
+{
+ int val = 0;
+
+#ifdef CONFIG_PROTECTED_VIRTUALIZATION_GUEST
+ val = prot_virt_guest;
+#endif
+ return scnprintf(page, PAGE_SIZE, "%d\n", val);
+}
+
+static ssize_t uv_is_prot_virt_host(struct kobject *kobj,
+ struct kobj_attribute *attr, char *page)
+{
+ int val = 0;
+
+#if IS_ENABLED(CONFIG_KVM)
+ val = prot_virt_host;
+#endif
+
+ return scnprintf(page, PAGE_SIZE, "%d\n", val);
+}
+
+static struct kobj_attribute uv_prot_virt_guest =
+ __ATTR(prot_virt_guest, 0444, uv_is_prot_virt_guest, NULL);
+
+static struct kobj_attribute uv_prot_virt_host =
+ __ATTR(prot_virt_host, 0444, uv_is_prot_virt_host, NULL);
+
+static const struct attribute *uv_prot_virt_attrs[] = {
+ &uv_prot_virt_guest.attr,
+ &uv_prot_virt_host.attr,
+ NULL,
+};
+
static struct kset *uv_query_kset;
static struct kobject *uv_kobj;
@@ -420,15 +455,23 @@ static int __init uv_info_init(void)
if (!uv_kobj)
return -ENOMEM;
- uv_query_kset = kset_create_and_add("query", NULL, uv_kobj);
- if (!uv_query_kset)
+ rc = sysfs_create_files(uv_kobj, uv_prot_virt_attrs);
+ if (rc)
goto out_kobj;
+ uv_query_kset = kset_create_and_add("query", NULL, uv_kobj);
+ if (!uv_query_kset) {
+ rc = -ENOMEM;
+ goto out_ind_files;
+ }
+
rc = sysfs_create_group(&uv_query_kset->kobj, &uv_query_attr_group);
if (!rc)
return 0;
kset_unregister(uv_query_kset);
+out_ind_files:
+ sysfs_remove_files(uv_kobj, uv_prot_virt_attrs);
out_kobj:
kobject_del(uv_kobj);
kobject_put(uv_kobj);
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 73c7afcc0527..f216a1b2f825 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -214,7 +214,7 @@ void vtime_flush(struct task_struct *tsk)
avg_steal = S390_lowcore.avg_steal_timer / 2;
if ((s64) steal > 0) {
S390_lowcore.steal_timer = 0;
- account_steal_time(steal);
+ account_steal_time(cputime_to_nsecs(steal));
avg_steal += steal;
}
S390_lowcore.avg_steal_timer = avg_steal;
generated by cgit v1.2.3 (git 2.46.0) at 2025-07-24 19:33:44 +0000