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:     Jacob Pan <jacob.jun.pan@linux.intel.com>,
        LKML <linux-kernel@vger.kernel.org>,
        "iommu@lists.linux.dev" <iommu@lists.linux.dev>,
        Robin Murphy <robin.murphy@arm.com>,
        Jason Gunthorpe <jgg@nvidia.com>,
        Lu Baolu <baolu.lu@linux.intel.com>,
        Joerg Roedel <joro@8bytes.org>,
        "dmaengine@vger.kernel.org" <dmaengine@vger.kernel.org>,
        "vkoul@kernel.org" <vkoul@kernel.org>
CC:     Will Deacon <will@kernel.org>,
        David Woodhouse <dwmw2@infradead.org>,
        "Raj, Ashok" <ashok.raj@intel.com>,
        "Liu, Yi L" <yi.l.liu@intel.com>,
        "Yu, Fenghua" <fenghua.yu@intel.com>,
        "Jiang, Dave" <dave.jiang@intel.com>,
        "Luck, Tony" <tony.luck@intel.com>,
        "Zanussi, Tom" <tom.zanussi@intel.com>,
        "Ranganathan, Narayan" <narayan.ranganathan@intel.com>
Subject: RE: [PATCH v5 3/7] iommu: Move global PASID allocation from SVA to
 core
Thread-Topic: [PATCH v5 3/7] iommu: Move global PASID allocation from SVA to
 core
Thread-Index: AQHZeTAViMSyyEOpO0G+LQmYevf5I69AeIDQ
Date:   Fri, 28 Apr 2023 09:46:25 +0000
Message-ID: <BN9PR11MB5276C41CCCCF3FDEA7DDF7AC8C6B9@BN9PR11MB5276.namprd11.prod.outlook.com>
References: <20230427174937.471668-1-jacob.jun.pan@linux.intel.com>
 <20230427174937.471668-4-jacob.jun.pan@linux.intel.com>
In-Reply-To: <20230427174937.471668-4-jacob.jun.pan@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?cU5PaXd5RGVyTit1ek9qWUF5Z09PZTV3VVVva0UreHZFdGNWUk1sc24rVTNy?=
 =?utf-8?B?WTdFYXZyK1p0UVpYWC9jQmo5RE0yRXVKaHJ6dUhlVUFKTXJEQUZQeURyaVc0?=
 =?utf-8?B?YWtXTXBYNkl3a1o2Y1MwTUtObkg5OC9aZjJwZ2xuNm5EMGl0N3o2aENwOEd5?=
 =?utf-8?B?ek1QZTd6L1NJUHU3blB6dittVVdBQ3lsUUd3SUV5YWk1aVhvdk9PcTQ3UUpn?=
 =?utf-8?B?UTFlT2dSbzBSZWpUcVhGWk5Vb0dDNGozZjE3NmpNbkFBVEV5eDRwZ3N3QWto?=
 =?utf-8?B?MnZzazhLbjRDaTRQdkFIQTNLVXk0QktSbkxERDJRUFZOdmJZWFFDcWkwR0Ra?=
 =?utf-8?B?TEk0OEtqWU5HY25XM2VkVEg0SXNxb3gwREcvdkh1ZlZoTlhrc0pYRWxQUkY3?=
 =?utf-8?B?VFMvTEU5b01BWEZYaDEyMXpDNm1PR01jbkRERU93U05RQ3haa29FQ1IzZitL?=
 =?utf-8?B?VU1VY3ozWTdpU3NSZGpOczVsb0hjeTVFQ08yakFvTzI1dXBMSUNvWDhXazMw?=
 =?utf-8?B?cXpuSmZNUXR3VEpGenpKczFMcGh4OThTcml1VXpRcVRsUHlqUkdWcHNmWGx0?=
 =?utf-8?B?UElBMTJON0ZMYXBHbDhGVGJ6QXlJTG8xcVJoOFgxRHJOZHQ4UVI5eDVFOGhR?=
 =?utf-8?B?VzhMQ3JrNG5EK2hjOFhZZ3ZiZGJJUGVMU3JVK1dvSE8xQUF4Q1hGcFZyM2U2?=
 =?utf-8?B?ZXF6YWlZcDlFS2FsRnFHMTFZZHRLOXMwMUI1RTk2TTNXamRLR1J2TW1RL3d3?=
 =?utf-8?B?OTdnckV5ZWxwSmMySldvbURicXBBL0gzeTdNOWpxR1BwNDByYjB2V3pjTkVU?=
 =?utf-8?B?Sm91YWs2VVVIZzJyUmF4c1BJaFRNTXdJY3Q5Yk5UV1hDUDZydEpVeU5Dcncx?=
 =?utf-8?B?d3hkeXZsR29ZNFk4bVJtbFdhQjFCdGJmK1MrSEpwQUNBK2FwSjVWSkdRTjFW?=
 =?utf-8?B?NjYvMURKaWJkbi9aRUVrVmU2QTMyYVpVWk0rWW96TGZkZktDZjFrSTBwb3lt?=
 =?utf-8?B?SittZkQzUHNXSlVXMm9PeG1QSDBkWWg0U2pYazhlVGFDRWdERjlXakFLTGp4?=
 =?utf-8?B?QmNiSHVrREVaWGNPeTM5TEs0Yjg1REplakZuWEtMaGhoS3ljcUNJNjdXSDA5?=
 =?utf-8?B?b1ZVQmRWM3JlMHlRNzIyejRtMTFScHlrVm5jNnh2SHVBVUEvNjk2L0NQbXc5?=
 =?utf-8?B?VENxQU1hNSthc3RIMGNTQmdLVkY1M3FQM2haRTI1QWN5eEhnMnFwendVamMy?=
 =?utf-8?B?cm9YK282MmJrWU1QRHY1WHZqV1JTZUQvdENVbXZOcHBBZUxmNTFWREdGYmgy?=
 =?utf-8?B?Y0dXOHdXMkx6QjJWTnV4YTVYend6WXlQSjZ6TkhPWmcrMDRMYmFJYVc5eDVE?=
 =?utf-8?B?QnJQeXdhRzZnMVY2L29XVTRRcXY5a2YyMGNBVjY1bGI0SU44Vk1NWnIxQjhK?=
 =?utf-8?B?Q2kwWGs3UXlVWUIzbDhWdzBTSUVpdURmbnB0ck9oeUlKeFpoT09sb25VVllw?=
 =?utf-8?B?OEp0S2FFbVdsUFAyZkwvM2JhdDNtTEdNQlFGaWF3cDdQVXpjSWVmMVdEVEY3?=
 =?utf-8?B?MjVWenV1VXErL01Sb2hjOWdpNVgvdHMzeXpKZkJFZlhRZGVRWVVPWVVSZU5K?=
 =?utf-8?B?NHg4Rmc5WUhCSjFXcFYwYnJYT1RwaUoycU85a0h3TmtJTWFXNFFnQS9hZU1k?=
 =?utf-8?B?RktUcFhCelRaMk9lZTZQQVArK1RWcHJEUVQ0b1d4cVZkdmlRY001d0Q0dnZR?=
 =?utf-8?B?ME5rMlY0RUxwb3VoQ3lGOE9GYXdVZmVSaDE3R1ZTVkI0dCtwenJncVZOSWxU?=
 =?utf-8?B?NXNZa0Jud1YvNHI0RkZpRHpiaHNIRVZtRmoxNGxBK2NSc2UwYitndnU2Znov?=
 =?utf-8?B?RndOSXk2Z2d6djlZU1c3aVdhTk82VXNDSEs0ZTlGa3pYWGVNNjlXdWI2M1hh?=
 =?utf-8?B?Q0pYenErR241d0VRUzRYdjZDRDlheUhMTkNaOC9saXppTEFQUkpOVkFZNGdK?=
 =?utf-8?B?Y05qTmVnNnByUVd4YXc5a1pZWlR1Nzd1bkcwMHRyY2FsNlUvQXNocEw3bmtH?=
 =?utf-8?B?bmljYWRkVjdLSVVTVEt5a1RFQUxvYXhyZExuT0tMYXhhT1RwQVM5TitOOS9m?=
 =?utf-8?Q?795kWvfyi0WpyeLj1NgbRcKnS?=
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: c42cad7a-a9a4-49b9-96ab-08db47cd6f08
X-MS-Exchange-CrossTenant-originalarrivaltime: 28 Apr 2023 09:46:25.9706
 (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: x46/nbHirp3+EnN4nQsP4coHJbfnMzz4yCNlZu74nTZ9WY8SvgBom4dAQ8Oy00ERojUyg9yYiSivCT4biX8UeQ==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR11MB6938
X-OriginatorOrg: intel.com
X-Spam-Status: No, score=-2.3 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,
        DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,
        SPF_NONE,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED 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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==