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authorYazen Ghannam <Yazen.Ghannam@amd.com>2016-05-11 14:58:27 +0200
committerIngo Molnar <mingo@kernel.org>2016-05-12 09:08:22 +0200
commit14cddfd5308b0880abd6e58b6660f5cc8e8020f9 (patch)
treef0613c3deac871a3351497244c1f88f459881b2c /arch/x86
parent71faad43060d3d2040583635fbf7d1bdb3d04118 (diff)
downloadlinux-14cddfd5308b0880abd6e58b6660f5cc8e8020f9.tar.bz2
x86/mce: Update AMD mcheck init to use cpu_has() facilities
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>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/cpu/mcheck/mce.c8
1 files 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