From patchwork Thu Dec 2 09:45:26 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Guangrong X-Patchwork-Id: 373471 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id oB29fVa2027598 for ; Thu, 2 Dec 2010 09:41:31 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756836Ab0LBJlJ (ORCPT ); Thu, 2 Dec 2010 04:41:09 -0500 Received: from cn.fujitsu.com ([222.73.24.84]:57226 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751434Ab0LBJlI (ORCPT ); Thu, 2 Dec 2010 04:41:08 -0500 Received: from tang.cn.fujitsu.com (tang.cn.fujitsu.com [10.167.250.3]) by song.cn.fujitsu.com (Postfix) with ESMTP id EA963170801; Thu, 2 Dec 2010 17:41:06 +0800 (CST) Received: from mailserver.fnst.cn.fujitus.com (tang.cn.fujitsu.com [127.0.0.1]) by tang.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id oB29aTPU022506; Thu, 2 Dec 2010 17:36:29 +0800 Received: from [10.167.225.99] ([10.167.225.99]) by mailserver.fnst.cn.fujitus.com (Lotus Domino Release 8.5.1FP4) with ESMTP id 2010120217411675-147322 ; Thu, 2 Dec 2010 17:41:16 +0800 Message-ID: <4CF76AB6.2040906@cn.fujitsu.com> Date: Thu, 02 Dec 2010 17:45:26 +0800 From: Xiao Guangrong User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.11) Gecko/20100713 Thunderbird/3.0.6 MIME-Version: 1.0 To: Avi Kivity CC: Marcelo Tosatti , Gleb Natapov , LKML , KVM Subject: [PATCH v4 2/3] KVM: MMU: fix accessed bit set on prefault path References: <4CF76A8B.2040102@cn.fujitsu.com> In-Reply-To: <4CF76A8B.2040102@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.1FP4|July 25, 2010) at 2010-12-02 17:41:16, Serialize by Router on mailserver/fnst(Release 8.5.1FP4|July 25, 2010) at 2010-12-02 17:41:17, Serialize complete at 2010-12-02 17:41:17 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Thu, 02 Dec 2010 09:41:31 +0000 (UTC) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 010736e..c6bb449 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -2214,7 +2214,8 @@ static void direct_pte_prefetch(struct kvm_vcpu *vcpu, u64 *sptep) } static int __direct_map(struct kvm_vcpu *vcpu, gpa_t v, int write, - int map_writable, int level, gfn_t gfn, pfn_t pfn) + int map_writable, int level, gfn_t gfn, pfn_t pfn, + bool prefault) { struct kvm_shadow_walk_iterator iterator; struct kvm_mmu_page *sp; @@ -2229,7 +2230,7 @@ static int __direct_map(struct kvm_vcpu *vcpu, gpa_t v, int write, pte_access &= ~ACC_WRITE_MASK; mmu_set_spte(vcpu, iterator.sptep, ACC_ALL, pte_access, 0, write, 1, &pt_write, - level, gfn, pfn, false, map_writable); + level, gfn, pfn, prefault, map_writable); direct_pte_prefetch(vcpu, iterator.sptep); ++vcpu->stat.pf_fixed; break; @@ -2321,7 +2322,8 @@ static int nonpaging_map(struct kvm_vcpu *vcpu, gva_t v, int write, gfn_t gfn, if (mmu_notifier_retry(vcpu, mmu_seq)) goto out_unlock; kvm_mmu_free_some_pages(vcpu); - r = __direct_map(vcpu, v, write, map_writable, level, gfn, pfn); + r = __direct_map(vcpu, v, write, map_writable, level, gfn, pfn, + prefault); spin_unlock(&vcpu->kvm->mmu_lock); @@ -2684,7 +2686,7 @@ static int tdp_page_fault(struct kvm_vcpu *vcpu, gva_t gpa, u32 error_code, goto out_unlock; kvm_mmu_free_some_pages(vcpu); r = __direct_map(vcpu, gpa, write, map_writable, - level, gfn, pfn); + level, gfn, pfn, prefault); spin_unlock(&vcpu->kvm->mmu_lock); return r;