diff options
| author | Borislav Petkov <borislav.petkov@amd.com> | 2011-10-17 16:34:36 +0200 |
|---|---|---|
| committer | Borislav Petkov <borislav.petkov@amd.com> | 2011-10-19 16:07:30 +0200 |
| commit | bcb80e53877c2045d9e52f4a71372c3fe6501f6f (patch) | |
| tree | 6b17bbf7610c2da4e2b9d63c85b8dfb65ceb1a48 | |
| parent | 881e23e56764808e7ab1ed73b5d8a6700042ea38 (diff) | |
x86, microcode, AMD: Add microcode revision to /proc/cpuinfo
Enable microcode revision output for AMD after 506ed6b53e00 ("x86,
intel: Output microcode revision in /proc/cpuinfo") did it for Intel.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
| -rw-r--r-- | arch/x86/kernel/cpu/amd.c | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/microcode_amd.c | 5 |
2 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index b13ed393dfc..d898fab0e12 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -412,6 +412,8 @@ static void __cpuinit early_init_amd_mc(struct cpuinfo_x86 *c) static void __cpuinit early_init_amd(struct cpuinfo_x86 *c) { + u32 dummy; + early_init_amd_mc(c); /* @@ -442,6 +444,8 @@ static void __cpuinit early_init_amd(struct cpuinfo_x86 *c) } #endif + rdmsr_safe(MSR_AMD64_PATCH_LEVEL, &c->microcode, &dummy); + /* We need to do the following only once */ if (c != &boot_cpu_data) return; diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c index 591be0ee193..d494799aafc 100644 --- a/arch/x86/kernel/microcode_amd.c +++ b/arch/x86/kernel/microcode_amd.c @@ -74,14 +74,13 @@ static struct equiv_cpu_entry *equiv_cpu_table; static int collect_cpu_info_amd(int cpu, struct cpu_signature *csig) { struct cpuinfo_x86 *c = &cpu_data(cpu); - u32 dummy; if (c->x86_vendor != X86_VENDOR_AMD || c->x86 < 0x10) { pr_warning("CPU%d: family %d not supported\n", cpu, c->x86); return -1; } - rdmsr(MSR_AMD64_PATCH_LEVEL, csig->rev, dummy); + csig->rev = c->microcode; pr_info("CPU%d: patch_level=0x%08x\n", cpu, csig->rev); return 0; @@ -130,6 +129,7 @@ static int apply_microcode_amd(int cpu) int cpu_num = raw_smp_processor_id(); struct ucode_cpu_info *uci = ucode_cpu_info + cpu_num; struct microcode_amd *mc_amd = uci->mc; + struct cpuinfo_x86 *c = &cpu_data(cpu); /* We should bind the task to the CPU */ BUG_ON(cpu_num != cpu); @@ -150,6 +150,7 @@ static int apply_microcode_amd(int cpu) pr_info("CPU%d: new patch_level=0x%08x\n", cpu, rev); uci->cpu_sig.rev = rev; + c->microcode = rev; return 0; } |