Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Kechen Lu <kechenl@nvidia.com>
To:     Sean Christopherson <seanjc@google.com>
CC:     "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
        "pbonzini@redhat.com" <pbonzini@redhat.com>,
        "vkuznets@redhat.com" <vkuznets@redhat.com>,
        Somdutta Roy <somduttar@nvidia.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: [RFC PATCH v3 1/7] KVM: x86: only allow exits disable before
 vCPUs created
Thread-Topic: [RFC PATCH v3 1/7] KVM: x86: only allow exits disable before
 vCPUs created
Thread-Index: AQHYgFWpO+aVuW3IJk6V/XCp8vu9Y62HtzMAgAAKSYCAAA2QUA==
Date:   Wed, 20 Jul 2022 18:38:46 +0000
Message-ID: <DM6PR12MB3500110A9D2AEA90E93EC6FCCA8E9@DM6PR12MB3500.namprd12.prod.outlook.com>
References: <20220615011622.136646-1-kechenl@nvidia.com>
 <20220615011622.136646-2-kechenl@nvidia.com> <Ytg3kHHdft8IqIP+@google.com>
 <YthAMfGD3nHtrOg9@google.com>
In-Reply-To: <YthAMfGD3nHtrOg9@google.com>
Accept-Language: en-US
Content-Language: en-US
x-ms-exchange-antispam-messagedata-chunkcount: 1
x-ms-exchange-antispam-messagedata-0: =?us-ascii?Q?fzqQRRSudmkONxKZM+1kb8WasoHSMem1GY2OCWFf2l9+qR3xgUw1dkFpuWke?=
 =?us-ascii?Q?YPsrsheOHdgJjoYEt3Uq/Ef6Ptx5jqEfpgrDShnz9ZJPhrVJjKjI5P9VyWnY?=
 =?us-ascii?Q?Hz5V3b+f2gx+l5zIU2GqjHONdgUyMhsdTOlPRP76mqzyphQmEG4eGrsZaRR3?=
 =?us-ascii?Q?TEfYZwGLAU570R8jnszdD8K3UNSO2fiaOkxNVmc00reEu2gefi/5r2gfBc8e?=
 =?us-ascii?Q?HVgAAJhGHAyG3AYtHXCgBJaccDh5Scg5VLyuhTnq9u7kGGp8adjNy0rZ6fBl?=
 =?us-ascii?Q?WR+jydKdO+A9P3jIFSSRl/0nFpqPDHf72fzj+0QQqM38TnwlHnZAwYG6i74R?=
 =?us-ascii?Q?Q04KtWtLYOc65E9RwshX14uKGUgRkMulISFDaXXiyKxWoONVayTxIcV97GbT?=
 =?us-ascii?Q?qF82VuKn8g0B7gxbgUAFszMnkxv6rhiS4yOKmm+vabViO7Rw1jfRME5e3v6O?=
 =?us-ascii?Q?bHOpHreWpAP3eSiu4wd/Q3hFcO+DMwyB5JWh6XB47hegaxJKb/mRKj6xwz4g?=
 =?us-ascii?Q?boH8coU9cKkbTw+ekkMehXZHE61y53beBXOaXHpOfhjDHTi4XtROs7bYDJVd?=
 =?us-ascii?Q?zCcAO+BTrmJXSNGLLQgUwk13oAJrn6rPX6tNc0y2tTIWAb41g18g5OwT3Cq3?=
 =?us-ascii?Q?q20xOB+/DsPBuXM5AZPyRakvqUwkcwxzCh+0xSm6+urdjDbFyj98lr0Kwr9Q?=
 =?us-ascii?Q?5kzN8ZCu13gHrJ8SXd9/xA8iapntqDp5XxPPLPhazK/VmvhjoOGpmjmUviQL?=
 =?us-ascii?Q?7prgkPvKCqPphUMRFW4Rb/3Q2HuALOqcKoCPmsPyaPYtkovt1Zx62wKMIPiK?=
 =?us-ascii?Q?rPutsi5Qml5ZrKuz31Rh6pQSIyQi/pgZOmeJ94GPLnzWvn4tY8ph6RDO9Wie?=
 =?us-ascii?Q?SQeOToYGWyht9MGjXLqvkS+ONgkiz/1XsFV1wP6Wq57YqEZB8zgJ7FgWleK5?=
 =?us-ascii?Q?FDb7b7D5ut1UoqOADvKnLXOk57zzuNUt5XeLGWRKdoWO1vqsyW8uQnXuoAqP?=
 =?us-ascii?Q?RSAF/Yq7XSz04OoJo0LU2nMUKXA83vHKbP+W1U44CwwyLorB+UD5r1edUw2i?=
 =?us-ascii?Q?eVAn1ZSzP1Mm1CNl47E8SgBMIIoh2ujDNdflCu4p9BbBnIelYyduMnBpN1Cb?=
 =?us-ascii?Q?NSCjlfoai4YO1UvTs3n4MfHzCMTW3xrNeQEYPcuwc3Na59x/Od3vTXivBD4V?=
 =?us-ascii?Q?4fyYNWOmL7+783dtT8VRipiPsk0WV9BU7oYq7Z3acEHzbsScIopOpe36E8ss?=
 =?us-ascii?Q?PhUCBUuLSPnG+437Vj7rlz0sfAYVeXg18U4X+hIMOcJby7egtbGIl+xLUlPr?=
 =?us-ascii?Q?Y/GTE23VhGWjw3cRaMgKrcJqMTLswecamNYdqPQnexw2EERzq31PoKFaP4/S?=
 =?us-ascii?Q?lwljetR3MYFPUfyHMARWZ27Bc8Y7if4JE8Or4hw/LPQVIv5uvOd6mBP7svRP?=
 =?us-ascii?Q?HK2lU41xVtff9u9VsrmUywPKbhbjJihQ6SVLKO2hx4MtNaxCS6/JANTqZgiW?=
 =?us-ascii?Q?PSP8XZaZf9ZNCRwdRrftmZIznLd/SDcKE7Fblay5BJMLPm284GOgQxSrnmU2?=
 =?us-ascii?Q?hUTrCap73IL1drrUOzO/2Ug7xLRIA7LfYmWZVu9V?=
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
X-OriginatorOrg: Nvidia.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: DM6PR12MB3500.namprd12.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: f3259d03-1c3b-4211-3367-08da6a7f149e
X-MS-Exchange-CrossTenant-originalarrivaltime: 20 Jul 2022 18:38:46.5493
 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 43083d15-7273-40c1-b7db-39efd9ccc17a
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: 9iDJevM4wlEzcyICNSNlcaxjaFuWWxIIXqVx+DmSxscrfKqFBJGxJ7yEglePw8Nmcq/VY2n4EF0iFNKJO9nS7A==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4566
X-Spam-Status: No, score=-1.8 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,
        DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO,
        RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE
        autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org


> -----Original Message-----
> From: Sean Christopherson <seanjc@google.com>
> Sent: Wednesday, July 20, 2022 10:50 AM
> To: Kechen Lu <kechenl@nvidia.com>
> Cc: kvm@vger.kernel.org; pbonzini@redhat.com; vkuznets@redhat.com;
> Somdutta Roy <somduttar@nvidia.com>; linux-kernel@vger.kernel.org
> Subject: Re: [RFC PATCH v3 1/7] KVM: x86: only allow exits disable before
> vCPUs created
>=20
> External email: Use caution opening links or attachments
>=20
>=20
> On Wed, Jul 20, 2022, Sean Christopherson wrote:
> > On Tue, Jun 14, 2022, Kechen Lu wrote:
> > > From: Sean Christopherson <seanjc@google.com>
> > >
> > > Since VMX and SVM both would never update the control bits if exits
> > > are disable after vCPUs are created, only allow setting exits
> > > disable flag before vCPU creation.
> > >
> > > Fixes: 4d5422cea3b6 ("KVM: X86: Provide a capability to disable
> > > MWAIT
> > > intercepts")
> >
> > Don't wrap the Fixes: line (ignore any complaints from checkpatch).
>=20
> Sorry, I didn't see that you had sent v4 already and replied to some v3
> patches.
> This one still holds true for v4 (very minor nit though).

Sure:)