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:   "Li, Xin3" <xin3.li@intel.com>
To:     "Li, Xin3" <xin3.li@intel.com>,
        "Hansen, Dave" <dave.hansen@intel.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "x86@kernel.org" <x86@kernel.org>,
        "kvm@vger.kernel.org" <kvm@vger.kernel.org>
CC:     "tglx@linutronix.de" <tglx@linutronix.de>,
        "mingo@redhat.com" <mingo@redhat.com>,
        "bp@alien8.de" <bp@alien8.de>,
        "dave.hansen@linux.intel.com" <dave.hansen@linux.intel.com>,
        "hpa@zytor.com" <hpa@zytor.com>,
        "peterz@infradead.org" <peterz@infradead.org>,
        "andrew.cooper3@citrix.com" <andrew.cooper3@citrix.com>,
        "Christopherson,, Sean" <seanjc@google.com>,
        "pbonzini@redhat.com" <pbonzini@redhat.com>,
        "Shankar, Ravi V" <ravi.v.shankar@intel.com>,
        "jiangshanlai@gmail.com" <jiangshanlai@gmail.com>,
        "Kang, Shan" <shan.kang@intel.com>
Subject: RE: [PATCH v7 23/33] x86/fred: let ret_from_fork() jmp to
 fred_exit_user when FRED is enabled
Thread-Topic: [PATCH v7 23/33] x86/fred: let ret_from_fork() jmp to
 fred_exit_user when FRED is enabled
Thread-Index: AQHZZuQAhOn3U+sdnkOeEQpf5aTJma8k40uAgAADRiCAAA/MMA==
Date:   Mon, 10 Apr 2023 19:25:32 +0000
Message-ID: <SA1PR11MB673446F0E92DD8230EE0619FA8959@SA1PR11MB6734.namprd11.prod.outlook.com>
References: <20230404102716.1795-1-xin3.li@intel.com>
 <20230404102716.1795-24-xin3.li@intel.com>
 <bbde7529-eb64-5454-0984-bfdabac37b64@intel.com>
 <SA1PR11MB673446DC2CFD6DEDF97AC954A8959@SA1PR11MB6734.namprd11.prod.outlook.com>
In-Reply-To: <SA1PR11MB673446DC2CFD6DEDF97AC954A8959@SA1PR11MB6734.namprd11.prod.outlook.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?V3dzMUVXU2FQeXo4M1NSRjRvUk1iUlhDQVZIN2VVL2hmZ0hveU11MVo4bGZU?=
 =?utf-8?B?dmYwcjB5elNIdlM2MlFiNDlLYkhaYnd5VWMwVi84SUtySkRzQU5jMlc5MndN?=
 =?utf-8?B?TnlGbGNodnNzTmhkYTE3dkJOYXJkYzJQYUlNeVBaWmpVYk9nbHJUZGw2U2ZM?=
 =?utf-8?B?N0tQZ2tXZFhhOEN3elFrMXRmZHdRQTM2SGt4N2FzN3JzQ3Fxd282M1lVVVJ1?=
 =?utf-8?B?enIwcWdZdThyYyt5OWl5Zk5YeUVXbEVGZkE4UkhURWtyYW9vSWVVNHczSmJ1?=
 =?utf-8?B?ZGdVdHdpdXl3NGJYSkFHL2lEbzVKTnpMMGlpZmc5dWVYSjVCMG1KV0k0STU5?=
 =?utf-8?B?cm1DelNYQ2IzZzNmTzF6c0JFRXJVT3hJcFd2elRNRHo2UGpOOXMwSjBJVVJn?=
 =?utf-8?B?WVdycytzWmNWRTVPYVZadm1maFl1YmNheWhvaDhLVm9XZjJHVE9sVDFUZmlv?=
 =?utf-8?B?L3VBbldZUjVYczFDM1ZWSXh5ckIzSURLd3g5N1FwRzBiajN3SXNKclAzMllU?=
 =?utf-8?B?Y3VLU042em91TU5venh6dGlsTVI2OEVZU1BDYitrYmZ4dHlEUFlMWlpYa1dQ?=
 =?utf-8?B?ZDRoUWNvQVZKTjhiekZRVzVUUEpIN0JITkF2eitQU1FsVGJ4N3JJQUhRTXJQ?=
 =?utf-8?B?UnEyWEVTTEhULzhOS1Mwb3Y5QzNpSlROL1FIaWJ3bVR1OG9TSlNLdEt3M0hv?=
 =?utf-8?B?bm9WMkhNNzJUckw2aHFVa3dwY21Xakc0L05jaWZscmdQU3l0OTFlb09zRUty?=
 =?utf-8?B?M09RUmVqeDNsdGNFMzJVakgwcFJIeFFQNTJQSU5UNVh1Y001TnBTM1JIVG5K?=
 =?utf-8?B?UEpaelJpem1qaFpGNzU2QmtGcnlxVEJMa2psZkY4UmlJMUFUVEVCYVVzdEdX?=
 =?utf-8?B?cTFsS2ZFKy9ZaytUeGExT2hTMW5pS05CSHVpWFN0Wk9TWlpFajcvMDZXYm5r?=
 =?utf-8?B?OXgwMGFPUVREY1lFelpLSWxkMENOand3K2FQdThvQ2VyNFVVTVpVQjY1WU9l?=
 =?utf-8?B?NzVXaEJ6Q2JaQk5FYit4WUFMOER1UkRVU2dDZWdrWVBtaHozKzBmUnpBdThZ?=
 =?utf-8?B?aVNlS1JYejVxbHdmWk9FZTdFQm5yY2srTzBnVG9YMDZCUzhjTVVncERCYjJD?=
 =?utf-8?B?NHp5ajFUVVpZT2Z6UDZYbW1EYVBJd2I0L3lvYjBSTGJiZUdtODJpZEIyUUZR?=
 =?utf-8?B?VERLTWhwRW9oOHFhSXFXanErUGhyYkdWSEhtZzJhS21tQmtYK3NqbjcyTDZX?=
 =?utf-8?B?RVdUYzQvdDcxSHQybmxIQmlPNEkrZzY0dkx2NXBSN0YvVGp1ZEJjclNwMDVh?=
 =?utf-8?B?TXZWWXg0M1U5QW1yZUYxOTlheFZwN0wzWmFad2FFaEpVVzdGWWJ1aHBXTmFz?=
 =?utf-8?B?QmhXR0Z5TXRqcDl0S2JtZTJkaEJ5OEJ2WmJhbTN5MHpGSFhyMS9JQ3ZBamU4?=
 =?utf-8?B?ZkdKdzViYVdpdmZXRzBQNjA5WlRtbysxNkRlMGtUZXlQTzJJNVZrTjBJa0Fl?=
 =?utf-8?B?ZWs0b0ZFNGRGNVVhTVZLbTcyNHdqaWhZU3MxMFFoeVNMVzBCN3NZZEgyWThR?=
 =?utf-8?B?ZXc0M2lUYjZ1d09SdEh1RjU4RnJrYUVxYXFkTUFFcHlYTnhwaTJydzhTYmw0?=
 =?utf-8?B?dm1YcWdCMWtNSmxXeDFaS08vL0xTeUVsZWhJd0FXM0NQVXFVQXdERWc3aUhT?=
 =?utf-8?B?TmZRRG8wMnNOWlppL3NNSFowZTl3T0hsV3ZEUEpoTHdjeEVWZURNdUVsUkY3?=
 =?utf-8?B?VGo4UUVCSzZUMzhKc1VNQUhxeFdhZnJlcXdGY2RXNXA0TTNaTFZMRjhVMGlj?=
 =?utf-8?B?QzUyUndRNHVYK09zSnMyOXp6b2ordlZKcllidUlzQnhROG1ZeVR2TUdNQXJY?=
 =?utf-8?B?dnJURm5mcU9RZ1p6MzdoK1ZoaW5sK040OVVlZDBPYlppamZvSXpiU3N2dW1p?=
 =?utf-8?B?dDdscmRzbmMyTGMzYWRMdUIvaG10MFVpSWdTYXoycmtQMWJGTGhGcWwzcVpl?=
 =?utf-8?B?ZmVvQXI5OHdLUWJFeEg5Qnl6VUpTNyt4eHJ2ZkV6NjMrcE1SY1cxR0xtMDRF?=
 =?utf-8?B?Mzc4NlNyNHA3dHFEeTdUT1BxNzN5cFpZQndvaTFxTW9PdDVQMW5wRGZENHAr?=
 =?utf-8?Q?OO5E=3D?=
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: SA1PR11MB6734.namprd11.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: e1add122-5203-4a2b-77c1-08db39f95a20
X-MS-Exchange-CrossTenant-originalarrivaltime: 10 Apr 2023 19:25:32.4645
 (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: a9yNHCZ7L5gS3N05rFWc34Ssz894QLX5WKl+OkAO/Wl0CYrzeIeQvxsviA0GEWwmR8LFelJFBh5FnprmVRwvuA==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR11MB7920
X-OriginatorOrg: intel.com
X-Spam-Status: No, score=-0.2 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED,
        DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_NONE
        autolearn=unavailable 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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==