From 0e5bf0d0e449f6597870570e8dd17e78ba4d75ff Mon Sep 17 00:00:00 2001 From: Sergey Kiselev Date: Thu, 22 Mar 2007 14:06:18 +0200 Subject: [PATCH] KVM: Handle writes to MCG_STATUS msr Some older (~2.6.7) kernels write MCG_STATUS register during kernel boot (mce_clear_all() function, called from mce_init()). It's not currently handled by kvm and will cause it to inject a GPF. Following patch adds a "nop" handler for this. Signed-off-by: Sergey Kiselev Signed-off-by: Avi Kivity --- drivers/kvm/kvm_main.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index 05235e1751fb..33eade7e237c 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -1467,6 +1467,10 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data) printk(KERN_WARNING "%s: MSR_IA32_MC0_STATUS 0x%llx, nop\n", __FUNCTION__, data); break; + case MSR_IA32_MCG_STATUS: + printk(KERN_WARNING "%s: MSR_IA32_MCG_STATUS 0x%llx, nop\n", + __FUNCTION__, data); + break; case MSR_IA32_UCODE_REV: case MSR_IA32_UCODE_WRITE: case 0x200 ... 0x2ff: /* MTRRs */