diff options
| author |   Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com> | 2015-10-30 13:11:37 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2015-11-01 11:26:13 +0100 |
| commit | c7f54d21fb02e90042e6233b46716dcb244e70e6 (patch) | |
| tree | 3972035446b8c6856e2cf55ab7e09043385bc1c4 /arch/x86/kernel | |
| parent | MAINTAINERS: Unify the microcode driver section (diff) | |
| download | linux-dev-c7f54d21fb02e90042e6233b46716dcb244e70e6.tar.xz linux-dev-c7f54d21fb02e90042e6233b46716dcb244e70e6.zip | |
x86/mce: Add a Scalable MCA vendor flags bit
Scalable MCA (SMCA) is a new feature in AMD Fam17h processors
which indicates presence of MCA extensions.
MCA extensions expands existing register space for the MCE banks
and also introduces a new MSR range to accommodate new banks.
Add the detection bit.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
[ Reformat mce_vendor_flags definitions and save indentation levels. Improve comments. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
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/1446207099-24948-2-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 17b5ec6edcb6..3d631c4abf91 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -1605,6 +1605,8 @@ static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c) mce_amd_feature_init(c); mce_flags.overflow_recov = !!(ebx & BIT(0)); mce_flags.succor = !!(ebx & BIT(1)); + mce_flags.smca = !!(ebx & BIT(3)); + break; } |