From: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
To: Avi Kivity <avi@redhat.com>
Cc: kvm@vger.kernel.org
Subject: [PATCH] kvm mmu: Don't calculate quadrant if tdp_enabled.
Date: Mon, 31 May 2010 17:11:39 +0800 [thread overview]
Message-ID: <4C037D4B.1030403@cn.fujitsu.com> (raw)
There's no need to calculate quadrant if tdp is enabled.
Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
---
arch/x86/kvm/mmu.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 0bb9f17..431863b 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1346,7 +1346,7 @@ static struct kvm_mmu_page *kvm_mmu_get_page(struct kvm_vcpu *vcpu,
if (role.direct)
role.cr4_pae = 0;
role.access = access;
- if (vcpu->arch.mmu.root_level <= PT32_ROOT_LEVEL) {
+ if (!tdp_enabled && vcpu->arch.mmu.root_level <= PT32_ROOT_LEVEL) {
quadrant = gaddr >> (PAGE_SHIFT + (PT64_PT_BITS * level));
quadrant &= (1 << ((PT32_PT_BITS - PT64_PT_BITS) * level)) - 1;
role.quadrant = quadrant;
--
1.6.5.2
next reply other threads:[~2010-05-31 9:13 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-31 9:11 Gui Jianfeng [this message]
2010-06-01 19:38 ` [PATCH] kvm mmu: Don't calculate quadrant if tdp_enabled Marcelo Tosatti
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=4C037D4B.1030403@cn.fujitsu.com \
--to=guijianfeng@cn.fujitsu.com \
--cc=avi@redhat.com \
--cc=kvm@vger.kernel.org \
/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;
as well as URLs for NNTP newsgroup(s).