diff mbox

[RFC,4/4] vmx: advertise support for ept execute only

Message ID 1466478746-14153-5-git-send-email-bsd@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Bandan Das June 21, 2016, 3:12 a.m. UTC 
With the internal plumbing in place, advertise support to the L1
hypervisor

Signed-off-by: Bandan Das <bsd@redhat.com>
---
 arch/x86/kvm/vmx.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index dbfc000..5157ea5 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2717,6 +2717,8 @@  static void nested_vmx_setup_ctls_msrs(struct vcpu_vmx *vmx)
 		vmx->nested.nested_vmx_ept_caps = VMX_EPT_PAGE_WALK_4_BIT |
 			 VMX_EPTP_WB_BIT | VMX_EPT_2MB_PAGE_BIT |
 			 VMX_EPT_INVEPT_BIT;
+		if (cpu_has_vmx_ept_execute_only())
+			vmx->nested.nested_vmx_ept_caps |= VMX_EPT_EXECUTE_ONLY_BIT;
 		vmx->nested.nested_vmx_ept_caps &= vmx_capability.ept;
 		/*
 		 * For nested guests, we don't do anything specific