From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
This job is normally performed by the architectural EFER set service
which we cannot use as it prevents transitions that are valid when
switching between L1 and L2. So open-code the update of base_role.nxe
after changing EFER on VM-entry and exit.
Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
---
arch/x86/kvm/vmx.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 99a4a70..44494ed 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -7741,6 +7741,8 @@ static void prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
vcpu->arch.efer &= ~(EFER_LMA | EFER_LME);
/* Note: modifies VM_ENTRY/EXIT_CONTROLS and GUEST/HOST_IA32_EFER */
vmx_set_efer(vcpu, vcpu->arch.efer);
+ vcpu->arch.mmu.base_role.nxe =
+ (vcpu->arch.efer & EFER_NX) && !enable_ept;
if (nested_cpu_has_ept(vmcs12)) {
kvm_mmu_unload(vcpu);
@@ -8185,6 +8187,8 @@ static void load_vmcs12_host_state(struct kvm_vcpu *vcpu,
else
vcpu->arch.efer &= ~(EFER_LMA | EFER_LME);
vmx_set_efer(vcpu, vcpu->arch.efer);
+ vcpu->arch.mmu.base_role.nxe =
+ (vcpu->arch.efer & EFER_NX) && !enable_ept;
kvm_register_write(vcpu, VCPU_REGS_RSP, vmcs12->host_rsp);
kvm_register_write(vcpu, VCPU_REGS_RIP, vmcs12->host_rip);
--
1.7.3.4
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