From: Joerg Roedel <[EMAIL PROTECTED]>
This patch aligns the host version of the CR4.MCE bit with the CR4 active in
the guest. This is necessary to get MCE exceptions when the guest is running.
Signed-off-by: Joerg Roedel <[EMAIL PROTECTED]>
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
---
arch/x86/kvm/svm.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index d7439ce..8af463b 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -878,9 +878,12 @@ set:
static void svm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
{
+ unsigned long host_cr4_mce = read_cr4() & X86_CR4_MCE;
+
vcpu->arch.cr4 = cr4;
if (!npt_enabled)
cr4 |= X86_CR4_PAE;
+ cr4 |= host_cr4_mce;
to_svm(vcpu)->vmcb->save.cr4 = cr4;
}
--
1.5.5
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