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>

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);