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Diffstat (limited to 'arch/x86/kvm/vmx/vmx.c')
-rw-r--r--arch/x86/kvm/vmx/vmx.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index fe5615fd8295..fc9008dbed33 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -4459,6 +4459,13 @@ vmx_adjust_secondary_exec_control(struct vcpu_vmx *vmx, u32 *exec_control,
* controls for features that are/aren't exposed to the guest.
*/
if (nested) {
+ /*
+ * All features that can be added or removed to VMX MSRs must
+ * be supported in the first place for nested virtualization.
+ */
+ if (WARN_ON_ONCE(!(vmcs_config.nested.secondary_ctls_high & control)))
+ enabled = false;
+
if (enabled)
vmx->nested.msrs.secondary_ctls_high |= control;
else