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Tue, 26 Apr 2022 19:45:32 +0800 From: Wen Pu To: Sandipan Das , Peter Zijlstra Cc: "linux-kernel@vger.kernel.org" , "linux-perf-users@vger.kernel.org" , "x86@kernel.org" , "bp@alien8.de" , "dave.hansen@linux.intel.com" Subject: Re: [PATCH v2 7/7] kvm: x86/cpuid: Fix CPUID leaf 0xA Thread-Topic: [PATCH v2 7/7] kvm: x86/cpuid: Fix CPUID leaf 0xA Thread-Index: AQHYWHxbGifZsj53i0W4Cl6nd1FFc60BVJgAgAAG9ICAADOjAA== Date: Tue, 26 Apr 2022 11:45:32 +0000 Message-Id: <25e89d27-d7da-2dea-dd20-0a9d8dcdee83@hygon.cn> References: <54bc7fe4cadf6bdef823bab1fba43d4891d2e1a9.1650515382.git.sandipan.das@amd.com> <20220426081550.GO2731@worktop.programming.kicks-ass.net> <9e6d14a0-a658-195c-c7a3-7d2687a61544@amd.com> In-Reply-To: <9e6d14a0-a658-195c-c7a3-7d2687a61544@amd.com> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: X-Originating-IP: [172.23.18.44] Content-Type: text/plain; charset="utf-8" Content-ID: Content-Transfer-Encoding: base64 Mime-Version: 1.0 X-MAIL: spam2.hygon.cn 23QBjhUM002405 X-DNSRBL: Precedence: bulk List-Id: X-Mailing-List: linux-kernel@vger.kernel.org T24gMjAyMi80LzI2IDE2OjQwLCBTYW5kaXBhbiBEYXMgd3JvdGU6DQo+IEhpIFBldGVyLA0KPiAN Cj4gT24gNC8yNi8yMDIyIDE6NDUgUE0sIFBldGVyIFppamxzdHJhIHdyb3RlOg0KPj4gT24gVGh1 LCBBcHIgMjEsIDIwMjIgYXQgMTE6MTY6NTlBTSArMDUzMCwgU2FuZGlwYW4gRGFzIHdyb3RlOg0K Pj4+IE9uIHNvbWUgeDg2IHByb2Nlc3NvcnMsIENQVUlEIGxlYWYgMHhBIHByb3ZpZGVzIGluZm9y bWF0aW9uDQo+Pj4gb24gQXJjaGl0ZWN0dXJhbCBQZXJmb3JtYW5jZSBNb25pdG9yaW5nIGZlYXR1 cmVzLiBJdA0KPj4+IGFkdmVydGlzZXMgYSBQTVUgdmVyc2lvbiB3aGljaCBRZW11IHVzZXMgdG8g ZGV0ZXJtaW5lIHRoZQ0KPj4+IGF2YWlsYWJpbGl0eSBvZiBhZGRpdGlvbmFsIE1TUnMgdG8gbWFu YWdlIHRoZSBQTUNzLg0KPj4+DQo+Pj4gVXBvbiByZWNlaXZpbmcgYSBLVk1fR0VUX1NVUFBPUlRF RF9DUFVJRCBpb2N0bCByZXF1ZXN0IGZvcg0KPj4+IHRoZSBzYW1lLCB0aGUga2VybmVsIGNvbnN0 cnVjdHMgcmV0dXJuIHZhbHVlcyBiYXNlZCBvbiB0aGUNCj4+PiB4ODZfcG11X2NhcGFiaWxpdHkg aXJyZXNwZWN0aXZlIG9mIHRoZSB2ZW5kb3IuDQo+Pj4NCj4+PiBUaGlzIGxlYWYgYW5kIHRoZSBh ZGRpdGlvbmFsIE1TUnMgYXJlIG5vdCBzdXBwb3J0ZWQgb24gQU1EDQo+Pj4gcHJvY2Vzc29ycy4g SWYgUGVyZk1vblYyIGlzIGRldGVjdGVkLCB0aGUgUE1VIHZlcnNpb24gaXMNCj4+PiBzZXQgdG8g MiBhbmQgZ3Vlc3Qgc3RhcnR1cCBicmVha3MgYmVjYXVzZSBvZiBhbiBhdHRlbXB0IHRvDQo+Pj4g YWNjZXNzIGEgbm9uLWV4aXN0ZW50IE1TUi4gUmV0dXJuIHplcm9zIHRvIGF2b2lkIHRoaXMuDQo+ Pj4NCj4+PiBGaXhlczogYTZjMDZlZDFhNjBhICgiS1ZNOiBFeHBvc2UgdGhlIGFyY2hpdGVjdHVy YWwgcGVyZm9ybWFuY2UgbW9uaXRvcmluZyBDUFVJRCBsZWFmIikNCj4+PiBSZXBvcnRlZC1ieTog VmFzYW50IEhlZ2RlIDx2YXNhbnQuaGVnZGVAYW1kLmNvbT4NCj4+PiBTaWduZWQtb2ZmLWJ5OiBT YW5kaXBhbiBEYXMgPHNhbmRpcGFuLmRhc0BhbWQuY29tPg0KPj4+IC0tLQ0KPj4+ICAgYXJjaC94 ODYva3ZtL2NwdWlkLmMgfCA1ICsrKysrDQo+Pj4gICAxIGZpbGUgY2hhbmdlZCwgNSBpbnNlcnRp b25zKCspDQo+Pj4NCj4+PiBkaWZmIC0tZ2l0IGEvYXJjaC94ODYva3ZtL2NwdWlkLmMgYi9hcmNo L3g4Ni9rdm0vY3B1aWQuYw0KPj4+IGluZGV4IDRiNjJkODBiYjIyZi4uNmJkNjVjYWQ3NWVmIDEw MDY0NA0KPj4+IC0tLSBhL2FyY2gveDg2L2t2bS9jcHVpZC5jDQo+Pj4gKysrIGIvYXJjaC94ODYv a3ZtL2NwdWlkLmMNCj4+PiBAQCAtODcyLDYgKzg3MiwxMSBAQCBzdGF0aWMgaW5saW5lIGludCBf X2RvX2NwdWlkX2Z1bmMoc3RydWN0IGt2bV9jcHVpZF9hcnJheSAqYXJyYXksIHUzMiBmdW5jdGlv bikNCj4+PiAgIAkJdW5pb24gY3B1aWQxMF9lYXggZWF4Ow0KPj4+ICAgCQl1bmlvbiBjcHVpZDEw X2VkeCBlZHg7DQo+Pj4gICANCj4+PiArCQlpZiAoYm9vdF9jcHVfZGF0YS54ODZfdmVuZG9yID09 IFg4Nl9WRU5ET1JfQU1EKSB7DQo+Pg0KPj4gVGhpcyBpcyB0aGUgb2JsaWdhdG9yeSBxdWVzdGlv biBhYm91dCBIWUdPTjsgc2hvdWxkIHRoZXkgYmUgaW5jbHVkZWQNCj4+IGhlcmU/DQo+Pg0KPj4g eDg2IGlzIGdldHRpbmcgYSBudW1iZXIgb2YgbWUtdG9vIHBhdGNoZXMgZnJvbSBib3RoIHNpZGVz LCB3aGVyZQ0KPj4gYmVoYXZpb3VyIGhhcyBkaXZlcmdlZCBmb3Igbm8gcmFpc2luIGFuZCB0aGVu IG5lZWRzIHRvIGJlIGZpeGVkIHVwDQo+PiBhZ2Fpbi4NCj4+DQo+IA0KPiAgRnJvbSB3aGF0IEkg dW5kZXJzdGFuZCwgSHlnb24gcHJvY2Vzc29ycyBhbHNvIGRvIG5vdCBzdXBwb3J0IHRoaXMgbGVh Zi4NCj4gQ29weWluZyBQdSBXZW4gZm9yIGNvbmZpcm1hdGlvbi4NCg0KSGkgUGV0ZXIsIFNhbmRp cGFu77yaDQoNCkkgaGF2ZSBjb25maXJtZWQgdGhhdCBIeWdvbiBwcm9jZXNzb3JzIGRvIG5vdCBz dXBwb3J0IENQVUlEIGxlYWYgMHhBLg0KU2FuZGlwYW4sIGNvdWxkIHlvdSBwbGVhc2UgYWxzbyBh ZGQgWDg2X1ZFTkRPUl9IWUdPTiBpbiB0aGUgaWYNCmNvbmRpdGlvbmFsPw0KDQotLSANClJlZ2Fy ZHMsDQpQdSBXZW4NCg0KPiAtIFNhbmRpcGFuDQo+IA0KPj4+ICsJCQllbnRyeS0+ZWF4ID0gZW50 cnktPmVieCA9IGVudHJ5LT5lY3ggPSBlbnRyeS0+ZWR4ID0gMDsNCj4+PiArCQkJYnJlYWs7DQo+ Pj4gKwkJfQ0KPj4+ICsNCj4+PiAgIAkJcGVyZl9nZXRfeDg2X3BtdV9jYXBhYmlsaXR5KCZjYXAp Ow0KPj4+ICAgDQo+Pj4gICAJCS8qDQo+Pj4gLS0gDQo+Pj4gMi4zMi4wDQo+Pj4=