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kvm: vmx: advertise support for ept execute only

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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>
This commit is contained in:
Bandan Das 2016-07-12 18:18:52 -04:00 committed by Paolo Bonzini
parent d95c55687e
commit 02120c45b0
1 changed files with 3 additions and 0 deletions
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3
arch/x86/kvm/vmx.c
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@ -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