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[209.132.180.67]) by mx.google.com with ESMTP id l27si17369320edc.358.2019.11.29.08.58.47; Fri, 29 Nov 2019 08:59:11 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726990AbfK2Q5s (ORCPT + 99 others); Fri, 29 Nov 2019 11:57:48 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([146.101.78.151]:46526 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726909AbfK2Q5r (ORCPT ); Fri, 29 Nov 2019 11:57:47 -0500 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-175-ncsrQBlpNwCNYiFsL1Oucg-1; Fri, 29 Nov 2019 16:57:43 +0000 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Fri, 29 Nov 2019 16:57:42 +0000 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Fri, 29 Nov 2019 16:57:42 +0000 From: David Laight To: 'Sebastian Andrzej Siewior' , Barret Rhoden CC: Borislav Petkov , Josh Bleecher Snyder , Rik van Riel , "x86@kernel.org" , "linux-kernel@vger.kernel.org" , Thomas Gleixner , "Ingo Molnar" , "ian@airs.com" , Austin Clements , David Chase Subject: RE: [PATCH v2] x86/fpu: Don't cache access to fpu_fpregs_owner_ctx Thread-Topic: [PATCH v2] x86/fpu: Don't cache access to fpu_fpregs_owner_ctx Thread-Index: AQHVpclHU3X60X8HPEmYZCr4nqmH8KeiYC6A Date: Fri, 29 Nov 2019 16:57:42 +0000 Message-ID: References: <20191126202026.csrmjre6vn2nxq7c@linutronix.de> <20191127124243.u74osvlkhcmsskng@linutronix.de> <20191127140754.GB3812@zn.tnic> <20191128085306.hxfa2o3knqtu4wfn@linutronix.de> In-Reply-To: <20191128085306.hxfa2o3knqtu4wfn@linutronix.de> 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: ncsrQBlpNwCNYiFsL1Oucg-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 RnJvbSBTZWJhc3RpYW4gQW5kcnplaiBTaWV3aW9yDQo+IFNlbnQ6IDI4IE5vdmVtYmVyIDIwMTkg MDg6NTMNCj4gVGhlIHN0YXRlL293bmVyIG9mIEZQVSBpcyBzYXZlZCBmcHVfZnByZWdzX293bmVy X2N0eCBieSBwb2ludGluZyB0byB0aGUNCj4gY29udGV4dCB0aGF0IGlzIGN1cnJlbnRseSBsb2Fk ZWQuIEl0IG5ldmVyIGNoYW5nZWQgZHVyaW5nIHRoZSBsaWZlIHRpbWUNCj4gb2YgYSB0YXNrIGFu ZCByZW1haW5lZCBzdGFibGUvY29uc3RhbnQuDQo+IA0KPiBTaW5jZSBkZWZlcnJlZCBsb2FkaW5n IHRoZSBGUFUgcmVnaXN0ZXJzIG9uIHJldHVybiB0byB1c2VybGFuZCwgdGhlDQo+IGNvbnRlbnQg b2YgZnB1X2ZwcmVnc19vd25lcl9jdHggbWF5IGNoYW5nZSBkdXJpbmcgcHJlZW1wdGlvbiBhbmQg bXVzdA0KPiBub3QgYmUgY2FjaGVkLg0KPiBUaGlzIHdlbnQgdW5ub3RpY2VkIGZvciBzb21lIHRp bWUgYW5kIHdhcyBub3cgbm90aWNlZCwgaW4gcGFydGljdWxhcg0KPiBnY2MtOSBpcyBhYmxlIHRv IGNhY2hlIHRoYXQgbG9hZCBpbiBjb3B5X2Zwc3RhdGVfdG9fc2lnZnJhbWUoKSBhbmQgcmV1c2UN Cj4gaXQgaW4gdGhlIHJldHJ5IGxvb3A6DQo+IA0KPiAgIGNvcHlfZnBzdGF0ZV90b19zaWdmcmFt ZSgpDQo+ICAgICBsb2FkIGZwdV9mcHJlZ3Nfb3duZXJfY3R4IGFuZCBzYXZlIG9uIHN0YWNrDQo+ ICAgICBmcHJlZ3NfbG9jaygpDQo+ICAgICBjb3B5X2ZwcmVnc190b19zaWdmcmFtZSgpIC8qIGZh aWxlZCAqLw0KPiAgICAgZnByZWdzX3VubG9jaygpDQo+ICAgICAgICAgICoqKiBQUkVFTVBUSU9O LCBhbm90aGVyIHVzZXMgRlBVLCBjaGFuZ2VzIGZwdV9mcHJlZ3Nfb3duZXJfY3R4ICoqKg0KPiAN Cj4gICAgIGZhdWx0X2luX3BhZ2VzX3dyaXRlYWJsZSgpIC8qIHN1Y2NlZWQsIHJldHJ5ICovDQo+ IA0KPiAgICAgZnByZWdzX2xvY2soKQ0KPiAJX19mcHJlZ3NfbG9hZF9hY3RpdmF0ZSgpDQo+IAkg IGZwcmVnc19zdGF0ZV92YWxpZCgpIC8qIHVzZXMgZnB1X2ZwcmVnc19vd25lcl9jdHggZnJvbSBz dGFjayAqLw0KPiAgICAgY29weV9mcHJlZ3NfdG9fc2lnZnJhbWUoKSAvKiBzdWNjZWVkcywgcmFu ZG9tIEZQVSBjb250ZW50ICovDQoNClNob3VsZCBib3RoIGZwcmVnc19sb2NrKCkgYW5kIGZwcmVn c191bmxvY2soKSBjb250YWluIGEgYmFycmllcigpIChvciAibWVtb3J5IiBjbG9iYmVyKQ0KZG8g c3RvcCB0aGUgY29tcGlsZXIgbW92aW5nIGFueXRoaW5nIGFjcm9zcyB0aGVtPw0KDQoJRGF2aWQN Cg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZh cm0sIE1pbHRvbiBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYg KFdhbGVzKQ0K