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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 <[email protected]>
[ Use the struct cpuinfo_x86 ptr instead. ]
Signed-off-by: Borislav Petkov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Brian Gerst <[email protected]>
Cc: Denys Vlasenko <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: linux-edac <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Yazen Ghannam 2016-05-11 14:58:27 +02:00 • committed by Ingo Molnar
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