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KVM: SVM: Sync cr0 and cr3 to kvm state before nested handling

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This patch syncs cr0 and cr3 from the vmcb to the kvm state
before nested intercept handling is done. This allows to
simplify the vmexit path.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Joerg Roedel 2010-04-22 12:33:09 +02:00 committed by Avi Kivity
parent 2041a06a50
commit 2be4fc7a02
1 changed files with 6 additions and 9 deletions
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15
arch/x86/kvm/svm.c
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@ -1799,10 +1799,7 @@ static int nested_svm_vmexit(struct vcpu_svm *svm)
nested_vmcb->save.gdtr = vmcb->save.gdtr;
nested_vmcb->save.idtr = vmcb->save.idtr;
nested_vmcb->save.cr0 = kvm_read_cr0(&svm->vcpu);
if (npt_enabled)
nested_vmcb->save.cr3 = vmcb->save.cr3;
else
nested_vmcb->save.cr3 = svm->vcpu.arch.cr3;
nested_vmcb->save.cr3 = svm->vcpu.arch.cr3;
nested_vmcb->save.cr2 = vmcb->save.cr2;
nested_vmcb->save.cr4 = svm->vcpu.arch.cr4;
nested_vmcb->save.rflags = vmcb->save.rflags;
@ -2641,6 +2638,11 @@ static int handle_exit(struct kvm_vcpu *vcpu)
trace_kvm_exit(exit_code, vcpu);
if (!(svm->vmcb->control.intercept_cr_write & INTERCEPT_CR0_MASK))
vcpu->arch.cr0 = svm->vmcb->save.cr0;
if (npt_enabled)
vcpu->arch.cr3 = svm->vmcb->save.cr3;
if (unlikely(svm->nested.exit_required)) {
nested_svm_vmexit(svm);
svm->nested.exit_required = false;
@ -2668,11 +2670,6 @@ static int handle_exit(struct kvm_vcpu *vcpu)
svm_complete_interrupts(svm);
if (!(svm->vmcb->control.intercept_cr_write & INTERCEPT_CR0_MASK))
vcpu->arch.cr0 = svm->vmcb->save.cr0;
if (npt_enabled)
vcpu->arch.cr3 = svm->vmcb->save.cr3;
if (svm->vmcb->control.exit_code == SVM_EXIT_ERR) {
kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
kvm_run->fail_entry.hardware_entry_failure_reason