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x86, mce: Fix MSR_IA32_MCI_CTL2 CMCI threshold setup

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It is reported that CMCI is not raised when number of corrected error
reaches preset threshold. After inspection, it is found that
MSR_IA32_MCI_CTL2 threshold field is not setup properly. This patch
fixed it.

Value of MCI_CTL2_CMCI_THRESHOLD_MASK is fixed according to x86_64
Software Developer's Manual too.

Reported-by: Shaohui Zheng <shaohui.zheng@intel.com>
Signed-off-by: Huang Ying <ying.huang@intel.com>
LKML-Reference: <1275977350.3444.660.camel@yhuang-dev.sh.intel.com>
Reviewed-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Huang Ying 2010-06-08 14:09:10 +08:00 committed by H. Peter Anvin
parent 1f9a0bd498
commit 3c41758860
2 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/include/asm/mce.h
View File

@ -40,7 +40,7 @@
/* CTL2 register defines */
#define MCI_CTL2_CMCI_EN (1ULL << 30)
#define MCI_CTL2_CMCI_THRESHOLD_MASK 0xffffULL
#define MCI_CTL2_CMCI_THRESHOLD_MASK 0x7fffULL
#define MCJ_CTX_MASK 3
#define MCJ_CTX(flags) ((flags) & MCJ_CTX_MASK)

1
arch/x86/kernel/cpu/mcheck/mce_intel.c
View File

@ -102,6 +102,7 @@ static void cmci_discover(int banks, int boot)
continue;
}
val &= ~MCI_CTL2_CMCI_THRESHOLD_MASK;
val |= MCI_CTL2_CMCI_EN | CMCI_THRESHOLD;
wrmsrl(MSR_IA32_MCx_CTL2(i), val);
rdmsrl(MSR_IA32_MCx_CTL2(i), val);