Messages in this thread Patch in this message | | | From | Borislav Petkov <> | Subject | [PATCH 5/7] x86/mce: Update AMD mcheck init to use cpu_has() facilities | Date | Wed, 11 May 2016 14:58:27 +0200 |
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From: Yazen Ghannam <Yazen.Ghannam@amd.com>
Use cpu_has() facilities to find available RAS features rather than directly reading CPUID 0x80000007_EBX.
Signed-off-by: Yazen Ghannam <Yazen.Ghannam@amd.com> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-edac <linux-edac@vger.kernel.org> Cc: x86-ml <x86@kernel.org> Link: http://lkml.kernel.org/r/1462914639-29513-4-git-send-email-Yazen.Ghannam@amd.com [ Use the struct cpuinfo_x86 ptr instead. ] Signed-off-by: Borislav Petkov <bp@suse.de> --- arch/x86/kernel/cpu/mcheck/mce.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index aeda44684758..92e5e37d97bf 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -1683,11 +1683,9 @@ static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c) break; case X86_VENDOR_AMD: { - u32 ebx = cpuid_ebx(0x80000007); - - mce_flags.overflow_recov = !!(ebx & BIT(0)); - mce_flags.succor = !!(ebx & BIT(1)); - mce_flags.smca = !!(ebx & BIT(3)); + mce_flags.overflow_recov = !!cpu_has(c, X86_FEATURE_OVERFLOW_RECOV); + mce_flags.succor = !!cpu_has(c, X86_FEATURE_SUCCOR); + mce_flags.smca = !!cpu_has(c, X86_FEATURE_SMCA); /* * Install proper ops for Scalable MCA enabled processors -- 2.7.3
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