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From: Bandan Das <bsd@redhat.com>
To: kvm@vger.kernel.org
Cc: pbonzini@redhat.com, guangrong.xiao@linux.intel.com
Subject: [RFC PATCH 4/4] vmx: advertise support for ept execute only
Date: Mon, 20 Jun 2016 23:12:26 -0400	[thread overview]
Message-ID: <1466478746-14153-5-git-send-email-bsd@redhat.com> (raw)
In-Reply-To: <1466478746-14153-1-git-send-email-bsd@redhat.com>

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(+)

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
-- 
2.5.5


  parent reply	other threads:[~2016-06-21  3:15 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-21  3:12 [RFC PATCH 0/4] Add support for EPT execute only for nested hypervisors Bandan Das
2016-06-21  3:12 ` [RFC PATCH 1/4] mmu: add a boolean to indicate host ept execute only support Bandan Das
2016-06-21  3:12 ` [RFC PATCH 2/4] mmu: Update ept specific valid bit values Bandan Das
2016-06-21  8:08   ` Paolo Bonzini
2016-06-22  4:09   ` Xiao Guangrong
2016-06-21  3:12 ` [RFC PATCH 3/4] mmu: don't set the present bit unconditionally Bandan Das
2016-06-21  8:12   ` Paolo Bonzini
2016-06-21  8:40     ` Paolo Bonzini
2016-06-22 16:10     ` Bandan Das
2016-06-22 16:12       ` Paolo Bonzini
2016-06-22 16:23         ` Bandan Das
2016-06-22  4:30   ` Xiao Guangrong
2016-06-22 16:21     ` Bandan Das
2016-06-21  3:12 ` Bandan Das [this message]
2016-06-22  4:39 ` [RFC PATCH 0/4] Add support for EPT execute only for nested hypervisors Xiao Guangrong
2016-06-22 16:34   ` Bandan Das
2016-06-23  5:03     ` Xiao Guangrong
2016-06-24  2:56       ` Bandan Das
2016-06-24  4:22         ` Paolo Bonzini
2016-06-24  4:50           ` Bandan Das
2016-06-24  6:46             ` Paolo Bonzini
2016-06-24  7:02               ` Xiao Guangrong
2016-06-24 16:19               ` Bandan Das

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