From: Xudong Hao <xudong.hao@linux.intel.com>
To: avi@redhat.com
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
haitao.shan@intel.com, xiantao.zhang@intel.com,
xudong.hao@intel.com
Subject: [PATCH 3/4] Enable EPT A/D bits if supported by turning on relevant bit in EPTP
Date: Wed, 16 May 2012 09:10:29 +0800 [thread overview]
Message-ID: <20120516011029.GD14256@hp-xd.sh.intel.com> (raw)
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
reply other threads:[~2012-05-16 1:07 UTC|newest]
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