From: Joerg Roedel <[email protected]> This patch fixes a bug in a nested hypervisor that heavily switches between real-mode and long-mode. The problem is fixed by syncing back efer into the guest vmcb on emulated vmexit.
Signed-off-by: Joerg Roedel <[email protected]> Signed-off-by: Marcelo Tosatti <[email protected]> diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 56c9b6b..7d10f2c 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1897,6 +1897,7 @@ static int nested_svm_vmexit(struct vcpu_svm *svm) nested_vmcb->save.ds = vmcb->save.ds; nested_vmcb->save.gdtr = vmcb->save.gdtr; nested_vmcb->save.idtr = vmcb->save.idtr; + nested_vmcb->save.efer = svm->vcpu.arch.efer; nested_vmcb->save.cr0 = kvm_read_cr0(&svm->vcpu); nested_vmcb->save.cr3 = svm->vcpu.arch.cr3; nested_vmcb->save.cr2 = vmcb->save.cr2; -- To unsubscribe from this list: send the line "unsubscribe kvm-commits" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
