From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, T_DKIMWL_WL_HIGH autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3DD80C4321E for ; Mon, 10 Sep 2018 08:39:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E1284204FD for ; Mon, 10 Sep 2018 08:39:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=microsoft.com header.i=@microsoft.com header.b="OC8hMGR/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E1284204FD Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=microsoft.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728157AbeIJNb6 (ORCPT ); Mon, 10 Sep 2018 09:31:58 -0400 Received: from mail-sg2apc01on0122.outbound.protection.outlook.com ([104.47.125.122]:19143 "EHLO APC01-SG2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727858AbeIJNb6 (ORCPT ); Mon, 10 Sep 2018 09:31:58 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=s5qv5cnQtCDMeHy5kGtsApVVQJj6IVTP3stNxTAsRnY=; b=OC8hMGR/mBXctwSQuCf6NTmM07N/1Ebu0VAEuBQOWnebxHPCawyPtwhtbkotMO8kb4sGROchiNVjB1Qo+M+KsxsRjfEN8tKBcUt+ckNnaA6REXfOW+oHWRoUjT+tUpDmK1LMxwvpAxmMj4ZIeUAgQCOsz4taqfh0r0z8/uUXUpE= Received: from HK0P153MB0129.APCP153.PROD.OUTLOOK.COM (52.133.156.18) by HK0P153MB0097.APCP153.PROD.OUTLOOK.COM (52.133.156.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1164.5; Mon, 10 Sep 2018 08:38:54 +0000 Received: from HK0P153MB0129.APCP153.PROD.OUTLOOK.COM ([fe80::194c:c2f9:171:1890]) by HK0P153MB0129.APCP153.PROD.OUTLOOK.COM ([fe80::194c:c2f9:171:1890%5]) with mapi id 15.20.1143.010; Mon, 10 Sep 2018 08:38:54 +0000 From: Tianyu Lan CC: Tianyu Lan , KY Srinivasan , Haiyang Zhang , Stephen Hemminger , "tglx@linutronix.de" , "mingo@redhat.com" , "hpa@zytor.com" , "x86@kernel.org" , "pbonzini@redhat.com" , "rkrcmar@redhat.com" , "devel@linuxdriverproject.org" , "linux-kernel@vger.kernel.org" , "kvm@vger.kernel.org" , "Michael Kelley (EOSG)" , vkuznets , Jork Loeser Subject: [PATCH 5/13] KVM/MMU: Flush tlb directly in the kvm_zap_gfn_range() Thread-Topic: [PATCH 5/13] KVM/MMU: Flush tlb directly in the kvm_zap_gfn_range() Thread-Index: AQHUSOG1FUu8HVgvhk2kMtmOqearVg== Date: Mon, 10 Sep 2018 08:38:54 +0000 Message-ID: <20180910083806.65177-6-Tianyu.Lan@microsoft.com> References: <20180910083806.65177-1-Tianyu.Lan@microsoft.com> In-Reply-To: <20180910083806.65177-1-Tianyu.Lan@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=Tianyu.Lan@microsoft.com; x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;HK0P153MB0097;6:YlEXgPZD/zqNlVK25ca/ORdr9yUEoZAx15QcAnaSA3mOTiBlA6wKfVlFmwZHVHeKSBVQkj29djNLFwtPwlfWaxV5r/+z/ruwcISytimHRQixRxO2ykG2qxjmE47XPItJZVYYJamH9SUlPdZDQrjSxUXzdchTrXrgZdFFLKN1pU3LswWHgvxmCScHPiZ+iyL00puGLb9mSjOe5zB4w5ixW5RzcGDJfxJX18shyF7S5rG1x+QvKBxPeEFG32DyH7kmQIy46hH9VA10zGf2cW4pKmSubUUPuR2Uk8UqmC9Z3Pu3PTuXssXQ3AdVTtFdwQwoCR4Ug8Xo9rT5MiSsmn4mv89V3IomayAntiEScDuusQeCKpVwi0Y6iU45wgFzHNelsMrFLMIK79ZWwZQMEvHg8LbKrm2gp1XVF3VcgwMnn3d8aPVNCWdrO/wrE0mKVmMwlA1OstJ/Qx2EdgymqGTq5g==;5:OufsM921ZgCl5NgmTARGv1lT5fbZlopcnEI/AEIo65PJDlZTlxiEt31wt9yfaceptEuHDijGkFgFYnVZkMxSsRHSpe3TY2Qy8NypayIhTniEUCVCKNiEK1rnNJ8N5h91skMmEuJhqOxwStOk8hZHZo1CJADxsJzyNj4eU2XTQqQ=;7:wnisSJdcRGUZk7pjIbMSwqbv2DqaNEjr2TFPyIs2vfO+i0FmRlSLSA7rrrPUbRe+CNWUuOyq+PLaK4kuM8Yi6WgFgwcwMzoOxdJ2gbkGAbwNySDuAotE7EZ1GgSEBeYw+XCHPcybGYZn5EgLRsgFdWYHPv/1E8H7jR8I4a3Yytvgsn5yuGm29vE40NSnPI2T4EjBTr2C3LBalWhLUws5DBi7kAP+G9ar+Nm3muOuNaDunlOAAoHy99hbyiOxosX7 x-ms-office365-filtering-correlation-id: 6a495857-12c5-4018-ec92-08d616f8d7e1 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989137)(5600074)(711020)(4618075)(2017052603328)(7193020);SRVR:HK0P153MB0097; x-ms-traffictypediagnostic: HK0P153MB0097: x-ld-processed: 72f988bf-86f1-41af-91ab-2d7cd011db47,ExtAddr x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(28532068793085)(89211679590171); x-ms-exchange-senderadcheck: 1 x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(6040522)(2401047)(8121501046)(5005006)(3002001)(93006095)(93001095)(3231311)(944501410)(52105095)(10201501046)(6055026)(149027)(150027)(6041310)(20161123562045)(20161123558120)(20161123560045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123564045)(201708071742011)(7699050);SRVR:HK0P153MB0097;BCL:0;PCL:0;RULEID:;SRVR:HK0P153MB0097; x-forefront-prvs: 07915F544A x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(346002)(39860400002)(366004)(396003)(376002)(136003)(199004)(189003)(4326008)(68736007)(107886003)(109986005)(25786009)(81166006)(8936002)(81156014)(8676002)(86612001)(86362001)(102836004)(22452003)(26005)(2906002)(6506007)(53936002)(1076002)(10090500001)(97736004)(575784001)(5250100002)(6512007)(6436002)(256004)(6486002)(2900100001)(14444005)(14454004)(10290500003)(99286004)(446003)(2616005)(11346002)(478600001)(76176011)(476003)(316002)(36756003)(54906003)(6116002)(486006)(106356001)(105586002)(3846002)(1671002)(305945005)(7416002)(7736002)(59246006)(72206003)(66066001)(5660300001);DIR:OUT;SFP:1102;SCL:1;SRVR:HK0P153MB0097;H:HK0P153MB0129.APCP153.PROD.OUTLOOK.COM;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: microsoft.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: sqRgCPn5LH951cTCs9ANTbH2jUvaUXV9fW7lI89ZJUTtcgcqWEB3WTH5ty0QTwo83mKXiN6ZjqKzdSODs3d9fwX2kGKd5+57OMPf7ZUbpIZMnjIlzJls/WKjUc3nISVTa+90UJgL0+GqLtt66fYn/tHpuGlGNODFdATcFfcnV8k1BW8aH8cKZTkkzt/BslyYTVo2eUP9hyipM5nHk22jp/vykqFlAMcAO9HQN3asNm1KgIE0GouHzML+OPyppixFqSD0bke0AFSj/JcAdFMBOzx+c4rgk7EJ0aY+Tw+INfCbVMC1SYMxvnucirDMjdy18vDde1vNqxvwXpDOZVmoy5qAYfqAcQiqWGEfHge7Ltg= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 6a495857-12c5-4018-ec92-08d616f8d7e1 X-MS-Exchange-CrossTenant-originalarrivaltime: 10 Sep 2018 08:38:54.5379 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: HK0P153MB0097 To: unlisted-recipients:; (no To-header on input) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Originally, flush tlb is done by slot_handle_level_range(). This patch is to flush tlb directly in the kvm_zap_gfn_range() when range flush is available. Signed-off-by: Lan Tianyu --- arch/x86/kvm/mmu.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index cadb6a0b5247..9ae5887c8d1c 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -5583,6 +5583,7 @@ void kvm_zap_gfn_range(struct kvm *kvm, gfn_t gfn_sta= rt, gfn_t gfn_end) { struct kvm_memslots *slots; struct kvm_memory_slot *memslot; + bool flush =3D false; int i; =20 spin_lock(&kvm->mmu_lock); @@ -5590,18 +5591,26 @@ void kvm_zap_gfn_range(struct kvm *kvm, gfn_t gfn_s= tart, gfn_t gfn_end) slots =3D __kvm_memslots(kvm, i); kvm_for_each_memslot(memslot, slots) { gfn_t start, end; + bool flush_tlb =3D true; =20 start =3D max(gfn_start, memslot->base_gfn); end =3D min(gfn_end, memslot->base_gfn + memslot->npages); if (start >=3D end) continue; =20 - slot_handle_level_range(kvm, memslot, kvm_zap_rmapp, - PT_PAGE_TABLE_LEVEL, PT_MAX_HUGEPAGE_LEVEL, - start, end - 1, true); + if (kvm_available_flush_tlb_with_range()) + flush_tlb =3D false; + + flush =3D slot_handle_level_range(kvm, memslot, + kvm_zap_rmapp, PT_PAGE_TABLE_LEVEL, + PT_MAX_HUGEPAGE_LEVEL, start, + end - 1, flush_tlb); } } =20 + if (flush && kvm_available_flush_tlb_with_range()) + kvm_flush_remote_tlbs_with_address(kvm, gfn_start, gfn_end); + spin_unlock(&kvm->mmu_lock); } =20 --=20 2.14.4