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:   "Tian, Kevin" <kevin.tian@intel.com>
To:     Baolu Lu <baolu.lu@linux.intel.com>,
        Jacob Pan <jacob.jun.pan@linux.intel.com>
CC:     Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
        "Robin Murphy" <robin.murphy@arm.com>,
        Jason Gunthorpe <jgg@ziepe.ca>,
        Jean-Philippe Brucker <jean-philippe@linaro.org>,
        Nicolin Chen <nicolinc@nvidia.com>,
        "Liu, Yi L" <yi.l.liu@intel.com>,
        "iommu@lists.linux.dev" <iommu@lists.linux.dev>,
        "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: [PATCH 9/9] iommu: Use fault cookie to store iopf_param
Thread-Topic: [PATCH 9/9] iommu: Use fault cookie to store iopf_param
Thread-Index: AQHZs5ROZ0DTU24O6Ue9hKGIoQNDRq+1H7OAgABWtACAAZVBwIAABa6AgABHHcA=
Date:   Thu, 13 Jul 2023 08:01:51 +0000
Message-ID: <BN9PR11MB527682E9AD97033D694A564B8C37A@BN9PR11MB5276.namprd11.prod.outlook.com>
References: <20230711010642.19707-1-baolu.lu@linux.intel.com>
 <20230711010642.19707-10-baolu.lu@linux.intel.com>
 <20230711150249.62917dad@jacob-builder>
 <e26db44c-ec72-085d-13ee-597237ba2134@linux.intel.com>
 <BN9PR11MB527640E6FBD5271E8AF9D59B8C37A@BN9PR11MB5276.namprd11.prod.outlook.com>
 <cf793119-591f-19b5-b708-45c6f3eadc79@linux.intel.com>
In-Reply-To: <cf793119-591f-19b5-b708-45c6f3eadc79@linux.intel.com>
Accept-Language: en-US
Content-Language: en-US
x-ms-exchange-antispam-messagedata-chunkcount: 1
x-ms-exchange-antispam-messagedata-0: =?utf-8?B?OHE4YjFQbTkzcTdiSHVwTjJ0REZIeU42eDFrZFRKYnpPUGtKLytPMEp4OWRj?=
 =?utf-8?B?QlNmS3FDR0d4S3RpRmw4c09UWndUK0VubkNzanZFM2JvR3hwSlpLZWZXcGFD?=
 =?utf-8?B?RVlGQlRMbk5WM3c5WmhwTVFFU25pSm5xQkpMMTRCdG9NK2ozMEMrMG9wclNL?=
 =?utf-8?B?MzU5UTY1SjRjcnQycW1KNUptOXQva0VPU3FKMlFsT3Nhejl5RWRXL2cwWjBR?=
 =?utf-8?B?TXpubDYvaHY1enFWeXA0RStkVlNqSk1vaUJoWjFYSlFpREUyT3RDMTBSTGll?=
 =?utf-8?B?MWpBOGlkd3gzNlN5Sit0eXB4SHNNNUFOMXp4d1Q0TXg3akxyYW1PTUpFc0JC?=
 =?utf-8?B?RnJheVlZKy9WMXF2UWlVRkdaN1VoOFR2WjhUOWtXNm1pdXdPNG1NMXlHVjNJ?=
 =?utf-8?B?OWkvSHY1d1p6dDRFVlppMEVXYUxRb2VPblltVkRiTkt0bDdtTmNjei9xTVZX?=
 =?utf-8?B?N2dwN3BweGlGem9jMGtDQnlvWUNLMFh3NU51S3REVlo4VjdOSnU0TnpGVzRW?=
 =?utf-8?B?OEFMd0xSOTZCUmtHUFVCaCtvcWdNL1BuWmhud0JZQVc3SklCS0lTMFU4TXJQ?=
 =?utf-8?B?cW8rMWxRNmI5UTdUMEhQREY3VEIvcVUvV3VRcUFZdms2YnJZSDdOVjdnYVJx?=
 =?utf-8?B?MmpiWFNCbUd4YlAxT0xNaTRUTWNaNUREeDN4bUlxNE5weGxkZVlHWlpIWlh2?=
 =?utf-8?B?Vk04WXUzeUprZWJkNjBFNzVRTEx6K1JqUHREK2JuZ21pZkFqa0RDZzZVTHl5?=
 =?utf-8?B?WnYxYmVTZGdpenBKeHF1dU11Zm9acUQ1RUZETUIxU0N4cnpTZFc5QnhwWXRP?=
 =?utf-8?B?Um1wZ014Y0hXWmdSWEdiNHBCN1Y0M0xVWU5CNlpNNFA3V1luVXo0UHk5OEhR?=
 =?utf-8?B?QU9XNHB1ZmFoYXM1dzVrQUUvdUFJSXNTZU9lbm5SVnlGbTNaVUhUdGtoamJ3?=
 =?utf-8?B?YlRSbkg1MDhJUElTb2hkTUpxUVYzYk93Y1M1VVBPUjNad1dDdkhNY3J4WGQ4?=
 =?utf-8?B?cUl2cC8vblBTUXB5WnFqdFROekZZV1lvam9VZm43OFUvNkhsalAxUTlJOHFV?=
 =?utf-8?B?V1FQY1hwcDU2QkhreVFqRlhodmhNb0p6UmNRcW5sMFJEdUxJaFRlRTQ0QzJS?=
 =?utf-8?B?a2UwZDRqN3FKczYrd0dGaVgwM2tQeVFxMUNhYlUxWmJYS0F3SHEwaWVjZWs2?=
 =?utf-8?B?MXJWZmRPdTRZQm1GVERmazduNUhWeXovQnJWVmFJcDhSMzUrQ2VQRnZFVlFF?=
 =?utf-8?B?TnhLT3ZjUHY4ZVBBZGVmY0x3dmJEdGp1MVJqUzloT1M1OTBnZ2lDTzlTaW5S?=
 =?utf-8?B?dndBdmZYUFp2SXYranZYYjY5WHFxaG1LYndwV2hzUk95dUhpbVVKMmVWQzAv?=
 =?utf-8?B?TXdSR05RSGlkQ01PWTFzSTQwc2t0N2NwemwyMTZIMzh4UGRmaklvNnpNRnh4?=
 =?utf-8?B?QzI3T2tFNEZPSjUxZWdoT011R0NiWHVVb3FjeWNlcmJoS1kwTCsxN0grUWRs?=
 =?utf-8?B?cTNVU2V6V3R1dmhmZ09pVUZTZk5mSHV4bWVVNDlXVEpkYlBFWUM0azBUZ0Jj?=
 =?utf-8?B?SEtnUThEWFBWb2RVTGEvUXllM25GWmljZDlnSmtFVE8yOW5FbHVrcEdXMkwv?=
 =?utf-8?B?b3V4dEpVQURTUEdSMEF2djZrOGx1Zm5BaTJhQXovcnhvNlRsbENtbTFYUkdS?=
 =?utf-8?B?TkF2ektHaHkvc05EQ0J3SkZJRnlhR0s1bjQ0dHVWUEMrYjlsMTR0TjVVWlV1?=
 =?utf-8?B?NGU2ZzR2QmR4SWZMSFpDZC91R3d3aVdFTXZxV0VtMjBHVVhldkEveWtrVHJ3?=
 =?utf-8?B?MnRBbmVpSGNTR2FzUXJYL3ltQ1JKeDk3OW9qZXhzOGRrVkp4Z3BSYTFpaE4x?=
 =?utf-8?B?ZFhuRDRlbkFhYUhDS1pSL2pkdWxQMXlpMXRJYnhiQ0FCSVF2ejNFaC9zaHBx?=
 =?utf-8?B?SERTM094UTJLbllhdWsxVklVaXBtb1B4a0dkRW16R1FQbi9pSUorVWlBOGJM?=
 =?utf-8?B?d1U4dkIyNGhIZWgxOEN1Qy9FK3phWGdLeEtUVElzazQzdmRoMEFGTWVjM2hn?=
 =?utf-8?B?a1ZMQjhWRWk3ejVoZEMvS3hseGRqaHdkQXZsdmo0UlFWbTB3V0dQeVRvRm9x?=
 =?utf-8?Q?x/4e85ZN2l4dGsELAK2hxCGmf?=
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: BN9PR11MB5276.namprd11.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: cbcd7358-6237-428c-9c84-08db83776a53
X-MS-Exchange-CrossTenant-originalarrivaltime: 13 Jul 2023 08:01:51.1070
 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: m9Tdw5+peSy75oVuLdiZZhF/pZzHuH950sF9UNfmtumHJNzAAF9UUIusOyMaT6dB/b0gKYWrGsrMMQy1Yaw6hg==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR11MB7812
X-OriginatorOrg: intel.com
X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,
        DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,
        RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,
        SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE 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
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