From patchwork Sat Apr 27 03:13:19 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Guangrong X-Patchwork-Id: 2496491 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 6AF51DF23A for ; Sat, 27 Apr 2013 03:15:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756930Ab3D0DOC (ORCPT ); Fri, 26 Apr 2013 23:14:02 -0400 Received: from e28smtp05.in.ibm.com ([122.248.162.5]:51687 "EHLO e28smtp05.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755674Ab3D0DNe (ORCPT ); Fri, 26 Apr 2013 23:13:34 -0400 Received: from /spool/local by e28smtp05.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sat, 27 Apr 2013 08:39:54 +0530 Received: from d28dlp03.in.ibm.com (9.184.220.128) by e28smtp05.in.ibm.com (192.168.1.135) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Sat, 27 Apr 2013 08:39:52 +0530 Received: from d28relay05.in.ibm.com (d28relay05.in.ibm.com [9.184.220.62]) by d28dlp03.in.ibm.com (Postfix) with ESMTP id 54BF1125804F; Sat, 27 Apr 2013 08:45:07 +0530 (IST) Received: from d28av03.in.ibm.com (d28av03.in.ibm.com [9.184.220.65]) by d28relay05.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r3R3DOUJ6488440; Sat, 27 Apr 2013 08:43:25 +0530 Received: from d28av03.in.ibm.com (loopback [127.0.0.1]) by d28av03.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r3R3DSN8012114; Sat, 27 Apr 2013 13:13:28 +1000 Received: from localhost (dhcp-9-111-29-234.cn.ibm.com [9.111.29.234]) by d28av03.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id r3R3DRIo012051; Sat, 27 Apr 2013 13:13:27 +1000 From: Xiao Guangrong To: mtosatti@redhat.com Cc: gleb@redhat.com, avi.kivity@gmail.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Xiao Guangrong Subject: [PATCH v4 3/6] KVM: MMU: introduce kvm_clear_all_lpage_info Date: Sat, 27 Apr 2013 11:13:19 +0800 Message-Id: <1367032402-13729-4-git-send-email-xiaoguangrong@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.7.6 In-Reply-To: <1367032402-13729-1-git-send-email-xiaoguangrong@linux.vnet.ibm.com> References: <1367032402-13729-1-git-send-email-xiaoguangrong@linux.vnet.ibm.com> X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13042703-8256-0000-0000-0000073D1129 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org This function is used to reset the large page info of all guest pages which will be used in later patch Signed-off-by: Xiao Guangrong --- arch/x86/kvm/x86.c | 25 +++++++++++++++++++++++++ arch/x86/kvm/x86.h | 2 ++ 2 files changed, 27 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 52b4e97..8e4494c 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -6951,6 +6951,31 @@ static void memslot_set_lpage_disallowed(struct kvm_memory_slot *slot, } } +static void clear_memslot_lpage_info(struct kvm_memory_slot *slot) +{ + int i; + + for (i = 1; i < KVM_NR_PAGE_SIZES; ++i) { + int lpages; + int level = i + 1; + + lpages = gfn_to_index(slot->base_gfn + slot->npages - 1, + slot->base_gfn, level) + 1; + + memset(slot->arch.lpage_info[i - 1], 0, + sizeof(*slot->arch.lpage_info[i - 1])); + memslot_set_lpage_disallowed(slot, slot->npages, i, lpages); + } +} + +void kvm_clear_all_lpage_info(struct kvm *kvm) +{ + struct kvm_memory_slot *slot; + + kvm_for_each_memslot(slot, kvm->memslots) + clear_memslot_lpage_info(slot); +} + int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages) { int i; diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h index e224f7a..beae540 100644 --- a/arch/x86/kvm/x86.h +++ b/arch/x86/kvm/x86.h @@ -108,6 +108,8 @@ static inline bool vcpu_match_mmio_gpa(struct kvm_vcpu *vcpu, gpa_t gpa) return false; } +void kvm_clear_all_lpage_info(struct kvm *kvm); + void kvm_before_handle_nmi(struct kvm_vcpu *vcpu); void kvm_after_handle_nmi(struct kvm_vcpu *vcpu); int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq, int inc_eip);