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authorJan Kiszka <jan.kiszka@siemens.com>2013-04-14 12:44:54 +0200
committerGleb Natapov <gleb@redhat.com>2013-04-22 12:53:52 +0300
commitd1fa0352a151a597e8749e7be84121a1ff0d3502 (patch)
treeca7605976c80dad0bf349693b8a5091227020e82
parent384bb783275145b70d769acf4c687957d1c61802 (diff)
KVM: nVMX: VM_ENTRY/EXIT_LOAD_IA32_EFER overrides EFER.LMA settings
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>
-rw-r--r--arch/x86/kvm/vmx.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index d7ef55686227..5863adf71ede 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -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);