From patchwork Fri May 31 00:36:21 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Guangrong X-Patchwork-Id: 2639331 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id D9FEA3FD2B for ; Fri, 31 May 2013 00:37:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752101Ab3EaAhG (ORCPT ); Thu, 30 May 2013 20:37:06 -0400 Received: from e28smtp07.in.ibm.com ([122.248.162.7]:46714 "EHLO e28smtp07.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751762Ab3EaAgo (ORCPT ); Thu, 30 May 2013 20:36:44 -0400 Received: from /spool/local by e28smtp07.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 31 May 2013 06:00:29 +0530 Received: from d28dlp01.in.ibm.com (9.184.220.126) by e28smtp07.in.ibm.com (192.168.1.137) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Fri, 31 May 2013 06:00:26 +0530 Received: from d28relay05.in.ibm.com (d28relay05.in.ibm.com [9.184.220.62]) by d28dlp01.in.ibm.com (Postfix) with ESMTP id 53695E0053; Fri, 31 May 2013 06:09:20 +0530 (IST) Received: from d28av01.in.ibm.com (d28av01.in.ibm.com [9.184.220.63]) by d28relay05.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r4V0aXZt66781318; Fri, 31 May 2013 06:06:33 +0530 Received: from d28av01.in.ibm.com (loopback [127.0.0.1]) by d28av01.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r4V0abYH026425; Fri, 31 May 2013 00:36:38 GMT Received: from localhost ([9.77.179.232]) by d28av01.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id r4V0aadH026353; Fri, 31 May 2013 00:36:37 GMT From: Xiao Guangrong To: gleb@redhat.com Cc: avi.kivity@gmail.com, mtosatti@redhat.com, pbonzini@redhat.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Xiao Guangrong Subject: [PATCH v8 02/11] KVM: MMU: drop unnecessary kvm_reload_remote_mmus Date: Fri, 31 May 2013 08:36:21 +0800 Message-Id: <1369960590-14138-3-git-send-email-xiaoguangrong@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.7.6 In-Reply-To: <1369960590-14138-1-git-send-email-xiaoguangrong@linux.vnet.ibm.com> References: <1369960590-14138-1-git-send-email-xiaoguangrong@linux.vnet.ibm.com> X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13053100-8878-0000-0000-000007540836 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org It is the responsibility of kvm_mmu_zap_all that keeps the consistent of mmu and tlbs. And it is also unnecessary after zap all mmio sptes since no mmio spte exists on root shadow page and it can not be cached into tlb Signed-off-by: Xiao Guangrong --- arch/x86/kvm/x86.c | 5 +---- 1 files changed, 1 insertions(+), 4 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 6739b1d..3758ff9 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7060,16 +7060,13 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, * If memory slot is created, or moved, we need to clear all * mmio sptes. */ - if ((change == KVM_MR_CREATE) || (change == KVM_MR_MOVE)) { + if ((change == KVM_MR_CREATE) || (change == KVM_MR_MOVE)) kvm_mmu_zap_mmio_sptes(kvm); - kvm_reload_remote_mmus(kvm); - } } void kvm_arch_flush_shadow_all(struct kvm *kvm) { kvm_mmu_zap_all(kvm); - kvm_reload_remote_mmus(kvm); } void kvm_arch_flush_shadow_memslot(struct kvm *kvm,