From: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
KVM doesn't yet support SGX virtualization, i.e. writes a constant value
to ENCLS_EXITING_BITMAP so that it can intercept ENCLS and inject a #UD.
Fixes: 0b665d3040281 ("KVM: vmx: Inject #UD for SGX ENCLS instruction in guest")
Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
---
arch/x86/kvm/vmx/nested.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
index f2be64256f15..fee297a5edda 100644
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -1943,6 +1943,9 @@ static void prepare_vmcs02_constant_state(struct vcpu_vmx *vmx)
if (enable_pml)
vmcs_write64(PML_ADDRESS, page_to_phys(vmx->pml_pg));
+ if (cpu_has_vmx_encls_vmexit())
+ vmcs_write64(ENCLS_EXITING_BITMAP, -1ull);
+
/*
* Set the MSR load/store lists to match L0's settings. Only the
* addresses are constant (for vmcs02), the counts can change based
@@ -2065,9 +2068,6 @@ static void prepare_vmcs02_early(struct vcpu_vmx *vmx, struct vmcs12 *vmcs12)
if (exec_control & SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES)
vmcs_write64(APIC_ACCESS_ADDR, -1ull);
- if (exec_control & SECONDARY_EXEC_ENCLS_EXITING)
- vmcs_write64(ENCLS_EXITING_BITMAP, -1ull);
-
vmcs_write32(SECONDARY_VM_EXEC_CONTROL, exec_control);
}
--
1.8.3.1
