diff options
author | Jeff Garzik <jeff@garzik.org> | 2012-07-25 15:58:48 -0400 |
---|---|---|
committer | Jeff Garzik <jgarzik@redhat.com> | 2012-07-25 15:58:48 -0400 |
commit | 8407884dd9164ec18ed2afc00f56b87e36c51fcf (patch) | |
tree | b6ea42c231d7d39f454de28a068d78ce11709770 /arch/x86/kernel/cpu/amd.c | |
parent | dc7f71f486f4f5fa96f6dcf86833da020cde8a11 (diff) | |
parent | bdc0077af574800d24318b6945cf2344e8dbb050 (diff) |
Merge branch 'master' [vanilla Linus master] into libata-dev.git/upstream
Two bits were appended to the end of the bitfield
list in struct scsi_device. Resolve that conflict
by including both bits.
Conflicts:
include/scsi/scsi_device.h
Diffstat (limited to 'arch/x86/kernel/cpu/amd.c')
-rw-r--r-- | arch/x86/kernel/cpu/amd.c | 39 |
1 files changed, 36 insertions, 3 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index 146bb6218eec..9d92e19039f0 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -19,6 +19,39 @@ #include "cpu.h" +static inline int rdmsrl_amd_safe(unsigned msr, unsigned long long *p) +{ + struct cpuinfo_x86 *c = &cpu_data(smp_processor_id()); + u32 gprs[8] = { 0 }; + int err; + + WARN_ONCE((c->x86 != 0xf), "%s should only be used on K8!\n", __func__); + + gprs[1] = msr; + gprs[7] = 0x9c5a203a; + + err = rdmsr_safe_regs(gprs); + + *p = gprs[0] | ((u64)gprs[2] << 32); + + return err; +} + +static inline int wrmsrl_amd_safe(unsigned msr, unsigned long long val) +{ + struct cpuinfo_x86 *c = &cpu_data(smp_processor_id()); + u32 gprs[8] = { 0 }; + + WARN_ONCE((c->x86 != 0xf), "%s should only be used on K8!\n", __func__); + + gprs[0] = (u32)val; + gprs[1] = msr; + gprs[2] = val >> 32; + gprs[7] = 0x9c5a203a; + + return wrmsr_safe_regs(gprs); +} + #ifdef CONFIG_X86_32 /* * B step AMD K6 before B 9730xxxx have hardware bugs that can cause @@ -586,9 +619,9 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c) !cpu_has(c, X86_FEATURE_TOPOEXT)) { u64 val; - if (!rdmsrl_amd_safe(0xc0011005, &val)) { + if (!rdmsrl_safe(0xc0011005, &val)) { val |= 1ULL << 54; - wrmsrl_amd_safe(0xc0011005, val); + wrmsrl_safe(0xc0011005, val); rdmsrl(0xc0011005, val); if (val & (1ULL << 54)) { set_cpu_cap(c, X86_FEATURE_TOPOEXT); @@ -679,7 +712,7 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c) err = rdmsrl_safe(MSR_AMD64_MCx_MASK(4), &mask); if (err == 0) { mask |= (1 << 10); - checking_wrmsrl(MSR_AMD64_MCx_MASK(4), mask); + wrmsrl_safe(MSR_AMD64_MCx_MASK(4), mask); } } |