mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Wanpeng Li <kernellwp@gmail.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: "Paolo Bonzini" <pbonzini@redhat.com>,
	"Radim Krčmář" <rkrcmar@redhat.com>,
	"Wanpeng Li" <wanpeng.li@hotmail.com>
Subject: [PATCH v2 2/2] KVM: VMX: Don't enable EPT A/D feature if EPT feature is disabled
Date: Thu, 11 May 2017 02:58:56 -0700	[thread overview]
Message-ID: <1494496736-9178-2-git-send-email-wanpeng.li@hotmail.com> (raw)
In-Reply-To: <1494496736-9178-1-git-send-email-wanpeng.li@hotmail.com>

From: Wanpeng Li <wanpeng.li@hotmail.com>

We can observe eptad kvm_intel module parameter is still Y 
even if ept is disabled which is weird. This patch will 
not enable EPT A/D feature if EPT feature is disabled.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
---
 arch/x86/kvm/vmx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index c6f4ad4..04c16ea 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -6504,7 +6504,7 @@ static __init int hardware_setup(void)
 		enable_ept_ad_bits = 0;
 	}
 
-	if (!cpu_has_vmx_ept_ad_bits())
+	if (!cpu_has_vmx_ept_ad_bits() || !enable_ept)
 		enable_ept_ad_bits = 0;
 
 	if (!cpu_has_vmx_unrestricted_guest())
-- 
2.7.4

      reply	other threads:[~2017-05-11  9:59 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-11  9:58 [PATCH v2 1/2] KVM: x86: Fix load damaged SSEx MXCSR register Wanpeng Li
2017-05-11  9:58 ` Wanpeng Li [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1494496736-9178-2-git-send-email-wanpeng.li@hotmail.com \
    --to=kernellwp@gmail.com \
    --cc=kvm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=pbonzini@redhat.com \
    --cc=rkrcmar@redhat.com \
    --cc=wanpeng.li@hotmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox

all inboxes | Powered by JetHome®