[PATCH] [8/9] x86: CMCI: Disable CMCI on rebooting

[Andi Kleen]

Disable the CMCI vector on reboot to avoid confusing other OS.

Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>

---
 arch/x86/kernel/apic.c |    8 ++++++++
 1 file changed, 8 insertions(+)

Index: linux/arch/x86/kernel/apic.c
===================================================================
--- linux.orig/arch/x86/kernel/apic.c	2009-02-12 12:02:27.000000000 +0100
+++ linux/arch/x86/kernel/apic.c	2009-02-12 12:10:16.000000000 +0100
@@ -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:
 	 */
--
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