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Peter Anvin" , Greg KH , Andi Kleen , "Luck, Tony" , "Raj, Ashok" , "Shankar, Ravi V" , "Yu, Fenghua" Subject: RE: [PATCH v2 2/2] x86/delay: Introduce TPAUSE delay Thread-Topic: [PATCH v2 2/2] x86/delay: Introduce TPAUSE delay Thread-Index: AQHV/m3yCORYmsI3CkqI0RgzexuEG6hRVwmAgABeFgCAAMawAIAAGecAgAAJR4CADz1qwA== Date: Mon, 30 Mar 2020 23:42:37 +0000 Message-ID: <3658BA65DD26AF4BA909BEB2C6DF6181A2A63C6A@ORSMSX102.amr.corp.intel.com> References: <1584677604-32707-1-git-send-email-kyung.min.park@intel.com> <1584677604-32707-3-git-send-email-kyung.min.park@intel.com> <877dzf4a8v.fsf@nanos.tec.linutronix.de> <87zhcaobjt.fsf@nanos.tec.linutronix.de> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-version: 11.2.0.6 dlp-reaction: no-action x-originating-ip: [10.22.254.138] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org SGkgQW5keS9UaG9tYXMsDQoNCiBPbiBGcmksIE1hciAyMCwgMjAyMCBhdCA0OjIzIFBNIFRob21h cyBHbGVpeG5lciA8dGdseEBsaW51dHJvbml4LmRlPiB3cm90ZToNCj4gPg0KPiA+IEFuZHkgTHV0 b21pcnNraSA8bHV0b0BrZXJuZWwub3JnPiB3cml0ZXM6DQo+ID4NCj4gPiA+IE9uIEZyaSwgTWFy IDIwLCAyMDIwIGF0IDM6MDAgQU0gVGhvbWFzIEdsZWl4bmVyIDx0Z2x4QGxpbnV0cm9uaXguZGU+ DQo+IHdyb3RlOg0KPiA+ID4+DQo+ID4gPj4gQW5keSBMdXRvbWlyc2tpIDxsdXRvQGtlcm5lbC5v cmc+IHdyaXRlczoNCj4gPiA+PiA+IE9uIFRodSwgTWFyIDE5LCAyMDIwIGF0IDk6MTMgUE0gS3l1 bmcgTWluIFBhcmsNCj4gPGt5dW5nLm1pbi5wYXJrQGludGVsLmNvbT4gd3JvdGU6DQo+ID4gPj4g Pj4gIHZvaWQgdXNlX3RzY19kZWxheSh2b2lkKQ0KPiA+ID4+ID4+ICB7DQo+ID4gPj4gPj4gLSAg ICAgICBpZiAoZGVsYXlfZm4gPT0gZGVsYXlfbG9vcCkNCj4gPiA+PiA+PiArICAgICAgIGlmIChz dGF0aWNfY3B1X2hhcyhYODZfRkVBVFVSRV9XQUlUUEtHKSkgew0KPiA+ID4+ID4+ICsgICAgICAg ICAgICAgICBkZWxheV9oYWx0X2ZuID0gZGVsYXlfaGFsdF90cGF1c2U7DQo+ID4gPj4gPj4gKyAg ICAgICAgICAgICAgIGRlbGF5X2ZuID0gZGVsYXlfaGFsdDsNCj4gPiA+PiA+PiArICAgICAgIH0g ZWxzZSBpZiAoZGVsYXlfZm4gPT0gZGVsYXlfbG9vcCkgew0KPiA+ID4+ID4+ICAgICAgICAgICAg ICAgICBkZWxheV9mbiA9IGRlbGF5X3RzYzsNCj4gPiA+PiA+PiArICAgICAgIH0NCj4gPiA+PiA+ PiAgfQ0KPiA+ID4+ID4NCj4gPiA+PiA+IFRoaXMgaXMgYW4gb2RkIHdheSB0byBkaXNwYXRjaDog eW91J3JlIHVzaW5nIHN0YXRpY19jcHVfaGFzKCksDQo+ID4gPj4gPiBidXQgeW91J3JlIHVzaW5n IGl0IG9uY2UgdG8gcG9wdWxhdGUgYSBmdW5jdGlvbiBwb2ludGVyLiAgV2h5IG5vdA0KPiA+ID4+ ID4ganVzdCBwdXQgdGhlIHN0YXRpY19jcHVfaGFzKCkgZGlyZWN0bHkgaW50byBkZWxheV9oYWx0 KCkgYW5kDQo+ID4gPj4gPiBvcGVuLWNvZGUgdGhlIHRocmVlIHZhcmlhbnRzPw0KPiA+ID4+DQo+ ID4gPj4gVHdvOiBtd2FpdHggYW5kIHRwYXVzZS4NCj4gPiA+DQo+ID4gPiBJIHdhcyBpbWFnaW5p bmcgdGhlcmUgd291bGQgYWxzbyBiZSBhIHZhcmlhbnQgZm9yIHN5c3RlbXMgd2l0aCBuZWl0aGVy DQo+IGZlYXR1cmUuDQo+ID4NCj4gPiBPaCBJIHNlZSwgeW91IHdhbnQgdG8gZ2V0IHJpZCBvZiBi b3RoIGZ1bmN0aW9uIHBvaW50ZXJzLiBUaGF0J3MgdHJpY2t5Lg0KPiA+DQo+ID4gVGhlIGJvb3Qg dGltZSBmdW5jdGlvbiBpcyBkZWxheV9sb29wKCkgd2hpY2ggaXMgdXNpbmcgdGhlIG1hZ2ljICgx IDw8DQo+ID4gMTIpIGJvb3QgdGltZSB2YWx1ZSB1bnRpbCBjYWxpYnJhdGlvbiBpbiBvbmUgd2F5 IG9yIHRoZSBvdGhlciBoYXBwZW5zDQo+ID4gYW5kIHNvbWV0aGluZyBjYWxscyB1c2VfdHNjX2Rl bGF5KCkgb3IgdXNlX213YWl0eF9kZWxheSgpLiBZZXMsIHRoYXQncw0KPiA+IGFsbCBob3JyaWJs ZSBidXQgWDg2X0ZFQVRVUkVfVFNDIGlzIHVudXNhYmxlIGZvciB0aGlzLg0KPiA+DQo+ID4gTGV0 IG1lIHRoaW5rIGFib3V0IGl0Lg0KPiANCj4gVGhpcyBpcyBkZWZpbml0ZWx5IG5vdCB3b3J0aCBv dmVyb3B0aW1pemluZy4gIEl0J3MgYSAqZGVsYXkqIGZ1bmN0aW9uDQo+IC0tIHRoZSByZXRwb2xp bmUgaXNuJ3QgZ29pbmcgdG8ga2lsbCB1cyA6KQ0KDQpTaW5jZSB0aGUgdXNlX3RzY19kZWxheSgp IGlzIHVzZWQganVzdCBvbmNlIGluIF9faW5pdCB0c2NfaW5pdCgpLCANCmhvdyBhYm91dCBhZGRp bmcgIl9faW5pdCIgdG8gdGhlIHVzZV90c2NfZGVsYXkoKSBhbmQga2VlcCB0aGVzZSBmdW5jdGlv biBwb2ludGVycz8NCg==