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Peter Anvin" , Josh Poimboeuf , Peter Zijlstra , John Stultz Subject: RE: [RFC PATCH 4/4] x86/TSC: Use RDTSCP Thread-Topic: [RFC PATCH 4/4] x86/TSC: Use RDTSCP Thread-Index: AQHUkkrWNSwtnyiO9kCe7sX2n/ihoKV+PuKQ Date: Fri, 14 Dec 2018 13:39:30 +0000 Message-ID: References: <20181211222326.14581-1-bp@alien8.de> <20181211222326.14581-5-bp@alien8.de> <59aad362-4a5b-dd8b-642f-0dc3f83cf7ee@amd.com> <20181211233901.GV27375@zn.tnic> <20181212100814.GB6653@zn.tnic> <20181212184459.GE6653@zn.tnic> In-Reply-To: <20181212184459.GE6653@zn.tnic> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 X-MC-Unique: 5MAOICzyOhqJ1pr0r7imnw-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogIEJvcmlzbGF2IFBldGtvdg0KPiBTZW50OiAxMiBEZWNlbWJlciAyMDE4IDE4OjQ1DQou Li4NCj4gPiBUaGUgcHJvcGVydHkgSSB3YW50IGZvciBSRFRTQyBvcmRlcmluZyBpcyBtdWNoIHdl YWtlcjogSSB3YW50IGl0IHRvIGJlDQo+ID4gb3JkZXJlZCBsaWtlIGEgbG9hZC4gIEltYWdpbmUg dGhhdCwgaW5zdGVhZCBvZiBhbiBvbi1jaGlwIFRTQywgdGhlIFRTQw0KPiA+IGlzIGxpdGVyYWxs eSBhIGxvY2F0aW9uIGluIG1haW4gbWVtb3J5IHRoYXQgZ2V0cyBpbmNyZW1lbnRlZCBieSBhbg0K PiA+IGV4dHJhIGRlZGljYXRlZCBDUFUgZXZlcnkgbmFub3NlY29uZCBvciBzby4gIEkgd2FudCB1 c2VycyBvZiBSRFRTQyB0bw0KPiA+IHdvcmsgYXMgaWYgdGhleSB3ZXJlIHJlYWRpbmcgc3VjaCBh IGxvY2F0aW9uIGluIG1lbW9yeSB1c2luZyBhbg0KPiA+IG9yZGluYXJ5IGxvYWQuICBJIGJlbGll dmUgdGhpcyBnaXZlcyB0aGUgcmVhbCBkZXNpcmVkIHByb3BlcnR5IHRoYXQgaXQNCj4gPiBzaG91 bGQgYmUgaW1wb3NzaWJsZSB0byBvYnNlcnZlIHRoZSBUU0MgZ29pbmcgYmFja3dhcmRzLiAgVGhp cyBpcyBhDQo+ID4gbXVjaCB3ZWFrZXIgZm9ybSBvZiBzZXJpYWxpemF0aW9uLg0KPiANCj4gV2Vs bCwgaW4gdGhhdCBjYXNlIHlvdSBuZWVkIHNvbWV0aGluZyBuZXcuDQo+IA0KPiBCZWNhdXNlLCB0 aGUgbW9tZW50IHlvdSBoYXZlIGEgUkRUU0MgaW4gZmxpZ2h0IGFuZCBhIHNlY29uZCBSRFRTQyBj b21lcw0KPiBpbiBhbmQgdGhhdCBzZWNvbmQgUkRUU0MgbXVzdCAqbm90KiBieXBhc3MgdGhlIGZp cnN0IG9uZSBhbmQgZXhlY3V0ZQ0KPiBlYXJsaWVyIGR1ZSB0byBPb08sIHlvdSBuZWVkIHRvIGlt cG9zZSBzb21lIG9yZGVyaW5nLiBBbmQgdGhhdCdzIHByZXR0eQ0KPiBtdWNoIHVhcmNoLWRlcGVu ZGVudCwgSSdkIHNheS4NCj4gDQo+IEFuZCBJIGd1ZXNzIG9uIEFNRCB0aGUgd2F5IHRvIGRvIHRo YXQgaXMgdG8gc3RvcCBkaXNwYXRjaCB1bnRpbCB0aGUNCj4gZmlyc3QgUkRUU0MgcmV0aXJlcy4N Cj4gDQo+IENhbiBpdCBiZSBkb25lIGZhc3Rlcj8gU3VyZS4gQW5kIEknbSBwcmV0dHkgc3VyZSB0 aGVyZSdzIGEgbG90IG9mIHBlc2t5DQo+IGxpdHRsZSBodyBkZXRhaWxzIHdlJ3JlIG5vdCBldmVu IGhlYXJpbmcgb2YsIHdoaWNoIGdldCBpbiB0aGUgd2F5Lg0KDQpJU1RSIG9uZSBvZiB0aGUgcHJv YmxlbXMgd2l0aCBSRFRTQyBzZXJpYWxpc2luZyBpcyB0aGF0IGl0IGlzIHVzZWQNCmZvciBtaWNy by1iZW5jaG1hcmtzLg0KU28geW91IHdhbnQgdG8gdGltZSBhbGwgdGhlIGluc3RydWN0aW9ucyBi ZXR3ZWVuIGEgcGFpciBvZiBSRFRTQy4NClRoaXMgZG9lc24ndCB3b3JrIHdlbGwgaWYgUkRUU0Mg ZG9lc24ndCB3YWl0IGZvciBhbGwgaW5zdHJ1Y3Rpb25zDQp0byBoYXZlIGV4ZWN1dGVkLg0KVGhl IHNlcmlhbGlzYXRpb24gcmVxdWlyZW1lbnRzIGZvciBzcGVjdHJlIG1pdGlnYXRpb24gYXJlIGRp ZmZlcmVudC4NCg0KCURhdmlkDQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVzcyBMYWtlc2lkZSwgQnJh bWxleSBSb2FkLCBNb3VudCBGYXJtLCBNaWx0b24gS2V5bmVzLCBNSzEgMVBULCBVSw0KUmVnaXN0 cmF0aW9uIE5vOiAxMzk3Mzg2IChXYWxlcykNCg==