Messages in this thread Patch in this message | | | From | Avi Kivity <> | Subject | [PATCH 04/31] KVM: SVM: align shadow CR4.MCE with host | Date | Mon, 21 Apr 2008 13:29:30 +0300 |
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From: Joerg Roedel <joerg.roedel@amd.com>
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 <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com> --- 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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