Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759443Ab1CDK4i (ORCPT ); Fri, 4 Mar 2011 05:56:38 -0500 Received: from cn.fujitsu.com ([222.73.24.84]:60477 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752084Ab1CDK4h (ORCPT ); Fri, 4 Mar 2011 05:56:37 -0500 Message-ID: <4D70C597.4070105@cn.fujitsu.com> Date: Fri, 04 Mar 2011 18:57:27 +0800 From: Xiao Guangrong User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101209 Fedora/3.1.7-0.35.b3pre.fc14 Thunderbird/3.1.7 MIME-Version: 1.0 To: Avi Kivity CC: Marcelo Tosatti , LKML , KVM Subject: [PATCH 2/10] KVM: MMU: fix kvm_mmu_get_spte_hierarchy References: <4D70C569.1030107@cn.fujitsu.com> In-Reply-To: <4D70C569.1030107@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.1FP4|July 25, 2010) at 2011-03-04 18:55:19, Serialize by Router on mailserver/fnst(Release 8.5.1FP4|July 25, 2010) at 2011-03-04 18:55:21, Serialize complete at 2011-03-04 18:55:21 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1020 Lines: 29 Don not walk to the next level if spte is mapping to the large page Signed-off-by: Xiao Guangrong --- arch/x86/kvm/mmu.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index b9bf016..10e0982 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -3819,7 +3819,8 @@ int kvm_mmu_get_spte_hierarchy(struct kvm_vcpu *vcpu, u64 addr, u64 sptes[4]) for_each_shadow_entry(vcpu, addr, iterator) { sptes[iterator.level-1] = *iterator.sptep; nr_sptes++; - if (!is_shadow_present_pte(*iterator.sptep)) + if (!is_shadow_present_pte(*iterator.sptep) || + is_last_spte(*iterator.sptep, iterator.level)) break; } spin_unlock(&vcpu->kvm->mmu_lock); -- 1.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/