From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 40EC1C43387 for ; Tue, 15 Jan 2019 12:44:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1D33F20656 for ; Tue, 15 Jan 2019 12:44:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728467AbfAOMo3 (ORCPT ); Tue, 15 Jan 2019 07:44:29 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([146.101.78.151]:49695 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727935AbfAOMo3 (ORCPT ); Tue, 15 Jan 2019 07:44:29 -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-183-r-PJp5a0ODaRzTwhwZ3WCw-1; Tue, 15 Jan 2019 12:44:26 +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; Tue, 15 Jan 2019 12:44:53 +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; Tue, 15 Jan 2019 12:44:53 +0000 From: David Laight To: 'Sebastian Andrzej Siewior' , "linux-kernel@vger.kernel.org" CC: "x86@kernel.org" , Andy Lutomirski , Paolo Bonzini , =?utf-8?B?UmFkaW0gS3LEjW3DocWZ?= , "kvm@vger.kernel.org" , "Jason A. Donenfeld" , Rik van Riel , Dave Hansen Subject: RE: [PATCH v6] x86: load FPU registers on return to userland Thread-Topic: [PATCH v6] x86: load FPU registers on return to userland Thread-Index: AQHUqBFG/2WmFKVnEEqv3ikTpa8106WwTizw Date: Tue, 15 Jan 2019 12:44:53 +0000 Message-ID: <2e396dbcbb1c4cc191b4208626baed07@AcuMS.aculab.com> References: <20190109114744.10936-1-bigeasy@linutronix.de> In-Reply-To: <20190109114744.10936-1-bigeasy@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: r-PJp5a0ODaRzTwhwZ3WCw-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 RnJvbTogIFNlYmFzdGlhbiBBbmRyemVqIFNpZXdpb3INCj4gU2VudDogMDkgSmFudWFyeSAyMDE5 IDExOjQ3DQo+DQo+IFRoaXMgaXMgYSByZWZ1cmJpc2hlZCBzZXJpZXMgb3JpZ2luYWxseSBzdGFy dGVkIGJ5IGJ5IFJpayB2YW4gUmllbC4gVGhlDQo+IGdvYWwgaXMgbG9hZCB0aGUgRlBVIHJlZ2lz dGVycyBvbiByZXR1cm4gdG8gdXNlcmxhbmQgYW5kIG5vdCBvbiBldmVyeQ0KPiBjb250ZXh0IHN3 aXRjaC4gQnkgdGhpcyBvcHRpbWlzYXRpb24gd2UgY2FuOg0KPiAtIGF2b2lkIGxvYWRpbmcgdGhl IHJlZ2lzdGVycyBpZiB0aGUgdGFzayBzdGF5cyBpbiBrZXJuZWwgYW5kIGRvZXMNCj4gICBub3Qg cmV0dXJuIHRvIHVzZXJsYW5kDQo+IC0gbWFrZSBrZXJuZWxfZnB1X2JlZ2luKCkgY2hlYXBlcjog aXQgb25seSBzYXZlcyB0aGUgcmVnaXN0ZXJzIG9uIHRoZQ0KPiAgIGZpcnN0IGludm9jYXRpb24u IFRoZSBzZWNvbmQgaW52b2NhdGlvbiBkb2VzIG5vdCBuZWVkIHNhdmUgdGhlbSBhZ2Fpbi4NCj4g DQo+IFRvIGFjY2VzcyB0aGUgRlBVIHJlZ2lzdGVycyBpbiBrZXJuZWwgd2UgbmVlZDoNCj4gLSBk aXNhYmxlIHByZWVtcHRpb24gdG8gYXZvaWQgdGhhdCB0aGUgc2NoZWR1bGVyIHN3aXRjaGVzIHRh c2tzLiBCeQ0KPiAgIGRvaW5nIHNvIGl0IHdvdWxkIHNldCBUSUZfTkVFRF9GUFVfTE9BRCBhbmQg dGhlIEZQVSByZWdpc3RlcnMgd291bGQgYmUNCj4gICBub3QgdmFsaWQuDQo+IC0gZGlzYWJsZSBC SCBiZWNhdXNlIHRoZSBzb2Z0aXJxIG1pZ2h0IHVzZSBrZXJuZWxfZnB1X2JlZ2luKCkgYW5kIHRo ZW4NCj4gICBzZXQgVElGX05FRURfRlBVX0xPQUQgaW5zdGVhZCBsb2FkaW5nIHRoZSBGUFUgcmVn aXN0ZXJzIG9uIGNvbXBsZXRpb24uDQoNCk9uY2UgdGhpcyBpcyBkb25lIGl0IG1pZ2h0IGJlIHdv cnRoIHdoaWxlIGFkZGluZyBhIHBhcmFtZXRlciB0bw0Ka2VybmVsX2ZwdV9iZWdpbigpIHRvIHJl cXVlc3QgdGhlIHJlZ2lzdGVycyBvbmx5IHdoZW4gdGhleSBkb24ndA0KbmVlZCBzYXZpbmcuDQpU aGlzIHdvdWxkIGJlbmVmaXQgY29kZSBwYXRocyB3aGVyZSB0aGUgZ2FpbnMgYXJlIHJlYXNvbmFi bGUgYnV0IG5vdCBtYXNzaXZlLg0KDQpUaGUgcmV0dXJuIHZhbHVlIGZyb20ga2VybmVsX2ZwdV9i ZWdpbigpIG91Z2h0IHRvIGluZGljYXRlIHdoaWNoDQpyZWdpc3RlcnMgYXJlIGF2YWlsYWJsZSAt IG5vbmUsIFNTRSwgU1NFMiwgQVZYLCBBVlg1MTIgZXRjLg0KU28gY29kZSBjYW4gdXNlIGFuIGFw cHJvcHJpYXRlIGltcGxlbWVudGF0aW9uLg0KKEkndmUgbm90IGxvb2tlZCB0byBzZWUgaWYgdGhp cyBpcyBhbHJlYWR5IHRoZSBjYXNlISkNCg0KCURhdmlkDQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVz cyBMYWtlc2lkZSwgQnJhbWxleSBSb2FkLCBNb3VudCBGYXJtLCBNaWx0b24gS2V5bmVzLCBNSzEg MVBULCBVSw0KUmVnaXN0cmF0aW9uIE5vOiAxMzk3Mzg2IChXYWxlcykNCg==