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KVM: nVMX: VM_ENTRY/EXIT_LOAD_IA32_EFER overrides EFER.LMA settings

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If we load the complete EFER MSR on entry or exit, EFER.LMA (and LME)
loading is skipped. Their consistency is already checked now before
starting the transition.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
This commit is contained in:
Jan Kiszka
2013-04-14 12:44:54 +02:00
committed by Gleb Natapov
parent 384bb78327
commit d1fa0352a1
1 changed files with 2 additions and 2 deletions
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4
arch/x86/kvm/vmx.c
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@@ -7519,7 +7519,7 @@ static void prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
if (vmcs12->vm_entry_controls & VM_ENTRY_LOAD_IA32_EFER)
vcpu->arch.efer = vmcs12->guest_ia32_efer;
if (vmcs12->vm_entry_controls & VM_ENTRY_IA32E_MODE)
else if (vmcs12->vm_entry_controls & VM_ENTRY_IA32E_MODE)
vcpu->arch.efer |= (EFER_LMA | EFER_LME);
else
vcpu->arch.efer &= ~(EFER_LMA | EFER_LME);
@@ -7929,7 +7929,7 @@ static void load_vmcs12_host_state(struct kvm_vcpu *vcpu,
{
if (vmcs12->vm_exit_controls & VM_EXIT_LOAD_IA32_EFER)
vcpu->arch.efer = vmcs12->host_ia32_efer;
if (vmcs12->vm_exit_controls & VM_EXIT_HOST_ADDR_SPACE_SIZE)
else if (vmcs12->vm_exit_controls & VM_EXIT_HOST_ADDR_SPACE_SIZE)
vcpu->arch.efer |= (EFER_LMA | EFER_LME);
else
vcpu->arch.efer &= ~(EFER_LMA | EFER_LME);