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authorNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>2012-09-27 10:08:00 -0700
committerTony Luck <tony.luck@intel.com>2012-09-27 10:08:00 -0700
commit450cc201038f31bd496e1b3a44a49790b8827a06 (patch)
tree254dd5a157702dad656ac37815fb346df94f8d8d /arch/x86/include/asm
parent961ebea4ae68075bb5a0acc19f5852bed82bb877 (diff)
x86/mce: Provide boot argument to honour bios-set CMCI threshold
The ACPI spec doesn't provide for a way for the bios to pass down recommended thresholds to the OS on a _per-bank_ basis. This patch adds a new boot option, which if passed, tells Linux to use CMCI thresholds set by the bios. As fail-safe, we initialize threshold to 1 if some banks have not been initialized by the bios and warn the user. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/x86/include/asm')
-rw-r--r--arch/x86/include/asm/mce.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
index ccaf7c581c8..54d73b1f00a 100644
--- a/arch/x86/include/asm/mce.h
+++ b/arch/x86/include/asm/mce.h
@@ -161,6 +161,7 @@ DECLARE_PER_CPU(struct device *, mce_device);
#ifdef CONFIG_X86_MCE_INTEL
extern int mce_cmci_disabled;
extern int mce_ignore_ce;
+extern int mce_bios_cmci_threshold;
void mce_intel_feature_init(struct cpuinfo_x86 *c);
void cmci_clear(void);
void cmci_reenable(void);