From: Xudong Hao <xudong.hao@intel.com>
To: avi@redhat.com
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
mtosatti@redhat.com, xiantao.zhang@intel.com,
Xudong Hao <xudong.hao@intel.com>,
Haitao Shan <haitao.shan@intel.com>
Subject: [PATCH v3 3/4] Enable EPT A/D bits if supported by turning on relevant bit in EPTP.
Date: Mon, 28 May 2012 19:33:36 +0800 [thread overview]
Message-ID: <1338204816-20654-3-git-send-email-xudong.hao@intel.com> (raw)
In-Reply-To: <1338204816-20654-1-git-send-email-xudong.hao@intel.com>
In EPT page structure entry, Enable EPT A/D bits if processor supported.
Signed-off-by: Haitao Shan <haitao.shan@intel.com>
Signed-off-by: Xudong Hao <xudong.hao@intel.com>
---
arch/x86/kvm/vmx.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 811a61e..89151a9 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3005,6 +3005,8 @@ static u64 construct_eptp(unsigned long root_hpa)
/* TODO write the value reading from MSR */
eptp = VMX_EPT_DEFAULT_MT |
VMX_EPT_DEFAULT_GAW << VMX_EPT_GAW_EPTP_SHIFT;
+ if (enable_ept_ad_bits)
+ eptp |= VMX_EPT_AD_ENABLE_BIT;
eptp |= (root_hpa & PAGE_MASK);
return eptp;
--
1.7.1
prev parent reply other threads:[~2012-05-28 11:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-28 11:33 [PATCH v3 1/4] Add EPT A/D bits definitions Xudong Hao
2012-05-28 11:33 ` [PATCH v3 2/4] Add parameter to control A/D bits support, default is on Xudong Hao
2012-05-28 11:33 ` Xudong Hao [this message]
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