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authorBandan Das <bsd@redhat.com>2016-07-12 18:18:52 -0400
committerPaolo Bonzini <pbonzini@redhat.com>2016-07-14 09:03:50 +0200
commit02120c45b07953ca4dfc19fa6ff90466efaf363f (patch)
treec8064e0f9a57eb870512d5785ed0e161f418a6f6 /arch/x86/kvm
parentd95c55687e11febe3ab1aacfe82b58b1822c52c4 (diff)
downloadop-kernel-dev-02120c45b07953ca4dfc19fa6ff90466efaf363f.zip
op-kernel-dev-02120c45b07953ca4dfc19fa6ff90466efaf363f.tar.gz
kvm: vmx: advertise support for ept execute only
MMU now knows about execute only mappings, so advertise the feature to L1 hypervisors Signed-off-by: Bandan Das <bsd@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
-rw-r--r--arch/x86/kvm/vmx.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index bd7d60f..729e5f6 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2794,6 +2794,9 @@ 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
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