x86, mce, cmci: disable CMCI on rebooting
Impact: Avoids confusing other OSes.
Disable the CMCI vector on reboot to avoid confusing other OS.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/arch/x86/kernel/apic.c b/arch/x86/kernel/apic.c
index 570f36e..648676f 100644
--- a/arch/x86/kernel/apic.c
+++ b/arch/x86/kernel/apic.c
@@ -868,6 +868,14 @@
apic_write(APIC_LVTTHMR, v | APIC_LVT_MASKED);
}
#endif
+#ifdef CONFIG_X86_MCE_INTEL
+ if (maxlvt >= 6) {
+ v = apic_read(APIC_LVTCMCI);
+ if (!(v & APIC_LVT_MASKED))
+ apic_write(APIC_LVTCMCI, v | APIC_LVT_MASKED);
+ }
+#endif
+
/*
* Clean APIC state for other OSs:
*/