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 D5E15C43387 for ; Tue, 15 Jan 2019 14:33:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B0ABC20675 for ; Tue, 15 Jan 2019 14:33:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730432AbfAOOdI (ORCPT ); Tue, 15 Jan 2019 09:33:08 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([146.101.78.151]:50917 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726863AbfAOOdH (ORCPT ); Tue, 15 Jan 2019 09:33:07 -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-83-xaAb4goyPsKmHdSZFYvqmw-1; Tue, 15 Jan 2019 14:33:04 +0000 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b::d117) by AcuMS.aculab.com (fd9f:af1c:a25b::d117) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Tue, 15 Jan 2019 14:33:32 +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 14:33:32 +0000 From: David Laight To: 'Sebastian Andrzej Siewior' CC: "linux-kernel@vger.kernel.org" , "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/2WmFKVnEEqv3ikTpa8106WwTizwgAAKZwCAABOrIA== Date: Tue, 15 Jan 2019 14:33:32 +0000 Message-ID: <1311521fdd274c08b379cef7252ebd8f@AcuMS.aculab.com> References: <20190109114744.10936-1-bigeasy@linutronix.de> <2e396dbcbb1c4cc191b4208626baed07@AcuMS.aculab.com> <20190115131516.ocyi34ovkgairfiy@linutronix.de> In-Reply-To: <20190115131516.ocyi34ovkgairfiy@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: xaAb4goyPsKmHdSZFYvqmw-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 RnJvbTogJ1NlYmFzdGlhbiBBbmRyemVqIFNpZXdpb3InDQo+IFNlbnQ6IDE1IEphbnVhcnkgMjAx OSAxMzoxNQ0KPiBPbiAyMDE5LTAxLTE1IDEyOjQ0OjUzIFsrMDAwMF0sIERhdmlkIExhaWdodCB3 cm90ZToNCj4gPiBPbmNlIHRoaXMgaXMgZG9uZSBpdCBtaWdodCBiZSB3b3J0aCB3aGlsZSBhZGRp bmcgYSBwYXJhbWV0ZXIgdG8NCj4gPiBrZXJuZWxfZnB1X2JlZ2luKCkgdG8gcmVxdWVzdCB0aGUg cmVnaXN0ZXJzIG9ubHkgd2hlbiB0aGV5IGRvbid0DQo+ID4gbmVlZCBzYXZpbmcuDQo+ID4gVGhp cyB3b3VsZCBiZW5lZml0IGNvZGUgcGF0aHMgd2hlcmUgdGhlIGdhaW5zIGFyZSByZWFzb25hYmxl IGJ1dCBub3QgbWFzc2l2ZS4NCj4gDQo+IFNvIGlmIHNhdmluZyArIEZQVSBjb2RlIGlzIGEgc21h bGwgd2luIHdoeSBub3QgZG8gdGhpcyBhbHdheXM/DQoNCkkgd2FzIHRoaW5raW5nIG9mIHRoZSBj YXNlIHdoZW4gdGhlIGNvc3Qgb2YgdGhlIGZwdSBzYXZlIGlzIGdyZWF0ZXINCnRoYW4gdGhlIHNh dmluZy4NClRoaXMgbWlnaHQgYmUgdHJ1ZSBmb3IgKHNheSkgYSBjcmMgb24gYSBzaG9ydCBidWZm ZXIuDQoNCj4gPiBUaGUgcmV0dXJuIHZhbHVlIGZyb20ga2VybmVsX2ZwdV9iZWdpbigpIG91Z2h0 IHRvIGluZGljYXRlIHdoaWNoDQo+ID4gcmVnaXN0ZXJzIGFyZSBhdmFpbGFibGUgLSBub25lLCBT U0UsIFNTRTIsIEFWWCwgQVZYNTEyIGV0Yy4NCj4gPiBTbyBjb2RlIGNhbiB1c2UgYW4gYXBwcm9w cmlhdGUgaW1wbGVtZW50YXRpb24uDQo+ID4gKEkndmUgbm90IGxvb2tlZCB0byBzZWUgaWYgdGhp cyBpcyBhbHJlYWR5IHRoZSBjYXNlISkNCj4gDQo+IEVpdGhlciBldmVyeXRoaW5nIGlzIHNhdmVk IG9yIG5vdGhpbmcuIFNvIGlmIFNTRSByZWdpc3RlcnMgYXJlIHNhdmVkDQo+IHRoZW4gQVZYNTEy IGFyZSwgdG9vLg0KDQooSSBrbm93IHRoYXQgLSBJJ3ZlIHdyaXR0ZW4gZnB1IHNhdmUgY29kZSBm b3IgQVZYKS4NCkkgd2FzIHRoaW5raW5nIHRoYXQgdGhlIHJldHVybiB2YWx1ZSB3b3VsZCBkZXBl bmQgb24gd2hhdCB0aGUgY3B1IHN1cHBvcnRzLg0KDQpJbiBmYWN0LCBnaXZlbiBzb21lIHRhbGsg YWJvdXQgYmlnLWxpdHRsZSBjcHVzIGl0IG1pZ2h0IGJlIHdvcnRoIGJlaW5nDQphYmxlIHRvIGFz ayBmb3IgYSBzcGVjaWZpYyByZWdpc3RlciBzZXQuDQpQb3RlbnRpYWxseSB0aGF0IGNvdWxkIGNh dXNlIGEgcHJvY2Vzc29yIHN3aXRjaC4NCg0KCURhdmlkDQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVz cyBMYWtlc2lkZSwgQnJhbWxleSBSb2FkLCBNb3VudCBGYXJtLCBNaWx0b24gS2V5bmVzLCBNSzEg MVBULCBVSw0KUmVnaXN0cmF0aW9uIE5vOiAxMzk3Mzg2IChXYWxlcykNCg==