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x86/mce: Update AMD mcheck init to use cpu_has() facilities

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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>
[ Use the struct cpuinfo_x86 ptr instead. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1462971509-3856-6-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Yazen Ghannam 2016-05-11 14:58:27 +02:00 committed by Ingo Molnar
parent 71faad4306
commit 14cddfd530
1 changed files with 3 additions and 5 deletions
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8
arch/x86/kernel/cpu/mcheck/mce.c
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@ -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