diff options
| author | Wanpeng Li <[email protected]> | 2017-10-19 07:00:34 +0800 |
|---|---|---|
| committer | Radim Krčmář <[email protected]> | 2017-10-20 18:05:01 +0200 |
| commit | 575b3a2cb439b03fd603ea77c73c76f3ed237596 (patch) | |
| tree | e74e123e56c94b426b868adf95581aef038eaf6e | |
| parent | cc3d967f7e32ceeb9b78dc962126ebcf1a2b24b2 (diff) | |
KVM: nVMX: Fix EPT switching advertising
I can use vmxcap tool to observe "EPTP Switching yes" even if EPT is not
exposed to L1.
EPT switching is advertised unconditionally since it is emulated, however,
it can be treated as an extended feature for EPT and it should not be
advertised if EPT itself is not exposed. This patch fixes it.
Reviewed-by: David Hildenbrand <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Cc: Radim Krčmář <[email protected]>
Cc: Jim Mattson <[email protected]>
Signed-off-by: Wanpeng Li <[email protected]>
Signed-off-by: Radim Krčmář <[email protected]>
| -rw-r--r-- | arch/x86/kvm/vmx.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 69d45734091f..dba0f6ad4e57 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2842,8 +2842,9 @@ static void nested_vmx_setup_ctls_msrs(struct vcpu_vmx *vmx) * Advertise EPTP switching unconditionally * since we emulate it */ - vmx->nested.nested_vmx_vmfunc_controls = - VMX_VMFUNC_EPTP_SWITCHING; + if (enable_ept) + vmx->nested.nested_vmx_vmfunc_controls = + VMX_VMFUNC_EPTP_SWITCHING; } /* |