linux-kernel - [PATCH 2/3] KVM: MMU: don not retry #PF for nonpaging guest

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Message-ID: <4CD28BCA.1060907@cn.fujitsu.com>
Date:	Thu, 04 Nov 2010 18:32:42 +0800
From:	Xiao Guangrong <xiaoguangrong@...fujitsu.com>
To:	Avi Kivity <avi@...hat.com>
CC:	Marcelo Tosatti <mtosatti@...hat.com>,
	Gleb Natapov <gleb@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, KVM <kvm@...r.kernel.org>
Subject: [PATCH 2/3] KVM: MMU: don not retry #PF for nonpaging guest

nonpaing guest's 'direct_map' is also true, retry #PF for those
guests is useless, so use 'tdp_enabled' instead

Signed-off-by: Xiao Guangrong <xiaoguangrong@...fujitsu.com>
---
 arch/x86/kvm/x86.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 2044302..aacc5eb 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6174,7 +6174,7 @@ void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, struct kvm_async_pf *work)
 {
 	int r;
 
-	if (!vcpu->arch.mmu.direct_map || is_error_page(work->page))
+	if (!tdp_enabled || is_error_page(work->page))
 		return;
 
 	r = kvm_mmu_reload(vcpu);
-- 
1.7.0.4

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