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Wed, 19 Sep 2018 16:08:58 +0000 Received: from CY4PR21MB0773.namprd21.prod.outlook.com ([fe80::d1f6:46cd:d8b4:880c]) by CY4PR21MB0773.namprd21.prod.outlook.com ([fe80::d1f6:46cd:d8b4:880c%5]) with mapi id 15.20.1185.003; Wed, 19 Sep 2018 16:08:58 +0000 From: "Michael Kelley (EOSG)" To: Tianyu Lan CC: 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" , vkuznets , Jork Loeser Subject: RE: [PATCH V2 4/13] KVM/MMU: Flush tlb directly in the kvm_handle_hva_range() Thread-Topic: [PATCH V2 4/13] KVM/MMU: Flush tlb directly in the kvm_handle_hva_range() Thread-Index: AQHUTv5LoppePkpNT0ychcducOMOjqT3x7YA Date: Wed, 19 Sep 2018 16:08:58 +0000 Message-ID: References: <20180918031754.113013-1-Tianyu.Lan@microsoft.com> <20180918031754.113013-5-Tianyu.Lan@microsoft.com> In-Reply-To: <20180918031754.113013-5-Tianyu.Lan@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: msip_labels: MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Enabled=True; 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received-spf: None (protection.outlook.com: microsoft.com does not designate permitted sender hosts) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Michael.H.Kelley@microsoft.com; x-microsoft-antispam-message-info: l6OjhC7KHYloMaSpSfvGx5ek2PvvkA+cjgRepQI/DHX21XuYDYRRKUgbyQWYPDigE8753QUMZwy0eiV/DBCwbnTTAWr9MjQBxeWSwkHK9cXAtnD/sjUQ7LRXPGGgr3VNsS7OF+HOJSlQQUdyIXTuXjnviQ51yA2lPUlwJ2wjDgp3DA3vvpfXsqlPfw+c7j7WlBYZxGS7EzhWeMFvNPTXwm4ozaP2fr88sTULsaqQD3sjoRpPeI8sKWjJLlsyV9Jy0ACob+vGu3B1xNhV/Z4AtkmagRlZ51riTkGCV9pxOidlzlyEtsR/0xdiwEOIfA1IhLJ7FrR/qLn7KV8W/ZbFLCkHJFa2jj3utXBKx2morSg= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: f8bddff1-caaf-4f09-a3b9-08d61e4a3514 X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Sep 2018 16:08:58.5251 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR21MB0134 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tianyu Lan Sent: Monday, September 17, 2018 8:19 PM > + > + if (ret && kvm_available_flush_tlb_with_range()) { > + kvm_flush_remote_tlbs_with_address(kvm, > + gfn_start, > + gfn_end - gfn_start); Does the above need to be gfn_end - gfn_start + 1? > + ret =3D 0; > + } Michael