From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bandan Das Subject: [PATCH 5/5] nvmx: advertise support for ept execute only Date: Tue, 28 Jun 2016 00:32:40 -0400 Message-ID: <1467088360-10186-6-git-send-email-bsd@redhat.com> References: <1467088360-10186-1-git-send-email-bsd@redhat.com> Cc: pbonzini@redhat.com, guangrong.xiao@linux.intel.com, linux-kernel@vger.kernel.org To: kvm@vger.kernel.org Return-path: In-Reply-To: <1467088360-10186-1-git-send-email-bsd@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org KVM MMU now knows about execute only mappings, so advertise the feature to L1 hypervisors Signed-off-by: Bandan Das --- arch/x86/kvm/vmx.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 417debc..0fe61a3 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2717,6 +2717,9 @@ 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 -- 2.5.5