Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:4 as permitted sender) client-ip=2620:137:e000::3:4;
From:   "Edgecombe, Rick P" <rick.p.edgecombe@intel.com>
To:     "kirill.shutemov@linux.intel.com" <kirill.shutemov@linux.intel.com>,
        "tglx@linutronix.de" <tglx@linutronix.de>,
        "mingo@redhat.com" <mingo@redhat.com>,
        "x86@kernel.org" <x86@kernel.org>, "bp@alien8.de" <bp@alien8.de>,
        "dave.hansen@linux.intel.com" <dave.hansen@linux.intel.com>
CC:     "kexec@lists.infradead.org" <kexec@lists.infradead.org>,
        "Reshetova, Elena" <elena.reshetova@intel.com>,
        "Nakajima, Jun" <jun.nakajima@intel.com>,
        "rafael@kernel.org" <rafael@kernel.org>,
        "peterz@infradead.org" <peterz@infradead.org>,
        "Huang, Kai" <kai.huang@intel.com>,
        "sathyanarayanan.kuppuswamy@linux.intel.com" 
        <sathyanarayanan.kuppuswamy@linux.intel.com>,
        "Hunter, Adrian" <adrian.hunter@intel.com>,
        "thomas.lendacky@amd.com" <thomas.lendacky@amd.com>,
        "ashish.kalra@amd.com" <ashish.kalra@amd.com>,
        "linux-coco@lists.linux.dev" <linux-coco@lists.linux.dev>,
        "seanjc@google.com" <seanjc@google.com>,
        "bhe@redhat.com" <bhe@redhat.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCHv4 10/14] x86/tdx: Convert shared memory back to private on
 kexec
Thread-Topic: [PATCHv4 10/14] x86/tdx: Convert shared memory back to private
 on kexec
Thread-Index: AQHaJxRg6aYbhJu/jEihwtrgSIlA/bCbeMWA
Date:   Wed, 6 Dec 2023 01:28:08 +0000
Message-ID: <3cf8b953c449320cc4c085924ef0e2eed5eadcf7.camel@intel.com>
References: <20231205004510.27164-1-kirill.shutemov@linux.intel.com>
         <20231205004510.27164-11-kirill.shutemov@linux.intel.com>
In-Reply-To: <20231205004510.27164-11-kirill.shutemov@linux.intel.com>
Accept-Language: en-US
Content-Language: en-US
user-agent: Evolution 3.44.4-0ubuntu2 
x-ms-exchange-antispam-messagedata-chunkcount: 1
x-ms-exchange-antispam-messagedata-0: =?utf-8?B?dGcrTEZZWmxMbDZ0TEVGcXBSS2VaQll4alAxU3k1TFVJT1ZuNE5PNHIvSTgz?=
 =?utf-8?B?TTBYbGEvbEtVNHFpYkpmbUdENHBXbXNEL1FORkgvYWNqTEZFN0F4WG43R0ls?=
 =?utf-8?B?VjE3SzFneWVncUgvSFdDb0JpVFJIQlMzTFE3ZW1CTWRFb0VqcldFUzkzMTM5?=
 =?utf-8?B?S2xCLzJyeVp2eHJDa0g2WWpGdzVUNGxSNUF2U2toUkhKQUZZb0dlUFpIZS9I?=
 =?utf-8?B?NXhHclVuQzN0OHN2WmJUb1p4YmxSOUF1eTl0bHZRUXlCVm5sK1J5T1BHWFZZ?=
 =?utf-8?B?ejFoYTlRM3BmaitjZU1mNUxEV3E5L0NubE9XT2hBTVZxYk5PUDhWazU5ZnY5?=
 =?utf-8?B?cWlEc0FRK1J4aTMrYVh4djNKRlhsVWlPWk0xY3oranhHa3ZrVnlGZkNNT1FR?=
 =?utf-8?B?OHljUENMd1hmSEovcHBxRkRGcWttb0orV2poRmdsZC93UW9wY0plUmJXVTBh?=
 =?utf-8?B?MC9qYVZNbkxhUmdHMENHRnRteDEyODlleHhYV1RaZVZZOENPOXhNTUJndG9k?=
 =?utf-8?B?dzQ0UFQ1bkZoWlhJTTNPNUdxazFjTlRQbmdsZzRRaDBBb2VhSHZ4TzVRRWZU?=
 =?utf-8?B?UlFQdzhZbi9uT00zWTdaVlVNcEJLV3RaOWcyd2hYVUFlbTA2L1ZSd3F0NW9q?=
 =?utf-8?B?bnlrY1FLWUg2WGNUSWwycjJVTGRHTldLRlZ3Yi9lT0lLWE5VNUFJZ2ppNVpq?=
 =?utf-8?B?QTgvd0plZ1ZGalRuSjg5R3d2TnlJLzVUR1ZXM2Z0QkUrQWpZNTZhNjFCcnlT?=
 =?utf-8?B?N3RVY0JRbDNTenUycGFCSStsTlhqdUI5cFBWck4zYXd4YnFxOWJ4MGxVNkZP?=
 =?utf-8?B?ZW1SUmRQMGpkeW5INlFJQnZEUHNnamQvS3NXckJtZnFOY2xWQlh2bFh6ZzhS?=
 =?utf-8?B?eWhjNEtEdHBMRXJZVnpIbDVRNm1NZG0zdFBxQk1EM005MUFNSVN3dFNhVHdm?=
 =?utf-8?B?ZkRtTGV6SUhwdU1RTlcxb1pEYTUvOHV3SjYrMGhDUEZ4dHQvdmZpenZLZFl6?=
 =?utf-8?B?T2lLTjNhVTJNcUJoYk9qM0kvTDNtOHJRTUNtaU5scWFWTmFIVGE2MU4vRUx0?=
 =?utf-8?B?dXNpMDdadkRodVJINDJEaFgyUTA0M0JtWEowV0ZrUjNBaVBzemgxQnIwd2lH?=
 =?utf-8?B?U3pjTW1PcUdVVDJGNkI1YmxrLzZ1ZDRVK1pRZUNKZVFqTjBuWEhlVkZZYUxy?=
 =?utf-8?B?c0tUeFM1aGM5TkR1MlEyaEVFa2p6R0dLNjZsUnFCQUFJalEzMXZZeUNvMms1?=
 =?utf-8?B?TFQycW4wUVZsT0Ntd1NSY1pPQ1lySUcyaGF0V2VFZkFQRVozZW9QVmllSG5G?=
 =?utf-8?B?NkIvaWtQZ1YyLzluMGhXQ3dNTUNWUXBxa015WDhxaVk1YUZlR0NUdUMwdU4x?=
 =?utf-8?B?eHBrcVlPcDRGd1k2RGE4QjJTTVNNdk9lTUxhWDI1dzNCbGJUcExZNEFQNDFn?=
 =?utf-8?B?STFVYXVzbkJITDNkMGNWT2V1RnB6YnNCZWZmbURUVzBxZGpoTnV0VEV3Lytt?=
 =?utf-8?B?cS9sZHlLV2IvclFsVXI1Zy9vMDVpZEdoQnZ6QUgwbkxXOFlUTFdBODVuaGs5?=
 =?utf-8?B?MElpdHhpZmhZTnNlZVJ4dk9NOCtGWi9mMFJieDJMOGFtK0JMcHRDckk3MFJX?=
 =?utf-8?B?cE8wMi9lcVpGN2pmV1ZxMHhSRnB4RkgxOHgrZXpUUTNHVm1Za2lCeGVrcDdE?=
 =?utf-8?B?VytiaXJFcEduaEsvdkxseDRpT2VGUi9kUENqQ3NHbVVkNG8zOTFhbGk5bXNC?=
 =?utf-8?B?eVZJOUpwWG9ZRmN4V2RhNDdjOC9qTlVpZkk1b2Jhb2Q5RmZhTkFLMURsYjVt?=
 =?utf-8?B?cnJZMnN6U1dqTXAwTGMvZjVnc3MrSXZlWkxiMzZDV0pLMTZXeUY0VDRHZEZt?=
 =?utf-8?B?YklaekIyUmR5c0EvUS8wWkRUWlhuaHFieTlxZlBVR21aOWg2WkRqcU5JWWov?=
 =?utf-8?B?Y1RsNnplUVNUeFJ4TFIrblI3RmU1a20xRlZoTUJjQ25NalErQlUzNmZrbVph?=
 =?utf-8?B?ckVxdlB4MXp6d2FjMktMQkp2YmQvb1BzclhyU1hwamVYQ3AxR1ZyTVhodHQ0?=
 =?utf-8?B?cmdPMENFK0MzME5scFdFNDR6NnhxT25xQVg1UjlSQ1NSNEhERWJxeVdSaDl0?=
 =?utf-8?B?M0pUN2IwS3VKSURYTXhBWklpOXVTeSs3bUE1eTRoRm9kd3Q1NVhzOHhrYTNO?=
 =?utf-8?B?Vnc9PQ==?=
Content-Type: text/plain; charset="utf-8"
Content-ID: <9170D72FCC2A544E9A38DB3640616E81@namprd11.prod.outlook.com>
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: MN0PR11MB5963.namprd11.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 0d81f220-79f0-4bd3-2bfa-08dbf5fa9a82
X-MS-Exchange-CrossTenant-originalarrivaltime: 06 Dec 2023 01:28:08.5342
 (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: NIqruUNyoBkHsjwfFcJ19AGYL3edBCfIBh1aph/z4lwKKcSBpF1OXS2NtWOj3S4VP6dqNsqeLmwq5PP7ZaoCnN4wJL3uddS80IDD1ZlNVTQ=
X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR11MB7444
X-OriginatorOrg: intel.com
X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED,
	DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE
	autolearn=unavailable autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on howler.vger.email
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (howler.vger.email [0.0.0.0]); Tue, 05 Dec 2023 17:28:52 -0800 (PST)
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