From 60f116fca162d9488f783f5014779463243ab7a2 Mon Sep 17 00:00:00 2001 From: Aravind Gopalakrishnan Date: Mon, 25 Jan 2016 20:41:50 +0100 Subject: [PATCH] x86/mce/AMD: Reduce number of blocks scanned per bank From Fam17h onwards, the number of extended MCx_MISC register blocks is reduced to 4. It is an architectural change from what we had on earlier processors. Although theoritically the total number of extended MCx_MISC registers was 8 in earlier processor families, in practice we only had to use the extra registers for MC4. And only 2 of those were used. So this change does not affect older processors. Tested on Fam10h and Fam15h systems. Signed-off-by: Aravind Gopalakrishnan Signed-off-by: Borislav Petkov Cc: Borislav Petkov Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Tony Luck Cc: linux-edac Link: http://lkml.kernel.org/r/1453750913-4781-6-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/mcheck/mce_amd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd.c b/arch/x86/kernel/cpu/mcheck/mce_amd.c index 3068ce25dfa1..5982227990c9 100644 --- a/arch/x86/kernel/cpu/mcheck/mce_amd.c +++ b/arch/x86/kernel/cpu/mcheck/mce_amd.c @@ -28,7 +28,7 @@ #include #include -#define NR_BLOCKS 9 +#define NR_BLOCKS 5 #define THRESHOLD_MAX 0xFFF #define INT_TYPE_APIC 0x00020000 #define MASK_VALID_HI 0x80000000 -- GitLab