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=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED 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 69362C43441 for ; Wed, 28 Nov 2018 15:27:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 365B0206B6 for ; Wed, 28 Nov 2018 15:27:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 365B0206B6 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ACULAB.COM Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728664AbeK2C3Z (ORCPT ); Wed, 28 Nov 2018 21:29:25 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([146.101.78.151]:42674 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727726AbeK2C3Z (ORCPT ); Wed, 28 Nov 2018 21:29:25 -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-139-yoTxg8ubPXm0pWNBZu6k_g-1; Wed, 28 Nov 2018 15:27:20 +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; Wed, 28 Nov 2018 15:27:28 +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; Wed, 28 Nov 2018 15:27:28 +0000 From: David Laight To: "'H. Peter Anvin'" , Sebastian Andrzej Siewior , Jann Horn CC: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Andy Lutomirski , "kernel-hardening@lists.openwall.com" , "Naveen N. Rao" , "linux-kernel@vger.kernel.org" , "x86@kernel.org" Subject: RE: [PATCH] x86/fpu: XRSTOR is expected to raise #GP Thread-Topic: [PATCH] x86/fpu: XRSTOR is expected to raise #GP Thread-Index: AQHUhcFLw8vcflGVjkKDrYg9xvXgSaVlUhOQ Date: Wed, 28 Nov 2018 15:27:28 +0000 Message-ID: <52276fe27116406eb601a99704459f80@AcuMS.aculab.com> References: <20181126172706.184008-1-jannh@google.com> <20181126174945.r2ubrlg2gzwog2ez@linutronix.de> <4d4c4f1f-72e3-0182-151e-8bd455ccd143@zytor.com> In-Reply-To: <4d4c4f1f-72e3-0182-151e-8bd455ccd143@zytor.com> 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: yoTxg8ubPXm0pWNBZu6k_g-1 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 RnJvbTogSC4gUGV0ZXIgQW52aW4NCj4gU2VudDogMjYgTm92ZW1iZXIgMjAxOCAxOTo1MA0KPiBP biAxMS8yNi8xOCA5OjQ5IEFNLCBTZWJhc3RpYW4gQW5kcnplaiBTaWV3aW9yIHdyb3RlOg0KPiA+ IE9uIDIwMTgtMTEtMjYgMTg6Mjc6MDYgWyswMTAwXSwgSmFubiBIb3JuIHdyb3RlOg0KPiA+PiBj b21taXQgNzUwNDVmNzdmN2E3ICgieDg2L2V4dGFibGU6IEludHJvZHVjZSBfQVNNX0VYVEFCTEVf VUEgZm9yIHVhY2Nlc3MNCj4gPj4gZml4dXBzIikgaW5jb3JyZWN0bHkgcmVwbGFjZWQgdGhlIGZp eHVwIGVudHJ5IGZvciBYU1RBVEVfT1Agd2l0aCBhDQo+ID4+IHVzZXItI1BGLW9ubHkgZml4dXAu IEhvd2V2ZXIsIFhSU1RPUiBjYW4gYWxzbyByYWlzZSAjR1Agd2hlbiB0aGUgc3VwcGxpZWQNCj4g Pj4gYWRkcmVzcyBwb2ludHMgdG8gdXNlcnNwYWNlIG1lbW9yeS4gQ2hhbmdlIGl0IGJhY2suDQo+ ID4NCj4gPiBUaGUgI0dQIGlzIHJhaXNlZCBpZiB0aGUgeHN0YXRlIGNvbnRlbnQgaXMgaW52YWxp ZC4gQnV0IEkgZ3Vlc3MgdGhlDQo+ID4gZGV0YWlscyBkb24ndCBtYXR0ZXIuDQo+ID4NCj4gPj4g UmVwb3J0ZWQtYnk6IFNlYmFzdGlhbiBBbmRyemVqIFNpZXdpb3IgPGJpZ2Vhc3lAbGludXRyb25p eC5kZT4NCj4gPj4gRml4ZXM6IDc1MDQ1Zjc3ZjdhNyAoIng4Ni9leHRhYmxlOiBJbnRyb2R1Y2Ug X0FTTV9FWFRBQkxFX1VBIGZvciB1YWNjZXNzIGZpeHVwcyIpDQo+ID4+IFNpZ25lZC1vZmYtYnk6 IEphbm4gSG9ybiA8amFubmhAZ29vZ2xlLmNvbT4NCj4gPiBBY2tlZC1ieTogU2ViYXN0aWFuIEFu ZHJ6ZWogU2lld2lvciA8YmlnZWFzeUBsaW51dHJvbml4LmRlPg0KPiA+DQo+IA0KPiBJdCBkb2Vz IG1hdHRlciAtLSBwbGVhc2UgY29ycmVjdCB0aGUgcGF0Y2ggZGVzY3JpcHRpb24sIG9yIHdlIG1p Z2h0IGhhdmUgc29tZQ0KPiBzZXJpb3VzIGNvbmZ1c2lvbiBhdCBzb21lIGFyYml0cmFyeSBwb2lu dCBpbiB0aGUgZnV0dXJlIHdpdGggdGhlIHJlc3VsdCB0aGF0DQo+IHRoZSBidWcgZ2V0cyByZS1p bnRyb2R1Y2VkOyBpdCB3b3VsZCBub3QgYmUgdGhlIGZpcnN0IHRpbWUuDQoNCkJldHRlciBzdGls bCBub3RlIGl0IGluIHRoZSBjb2RlLg0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNz IExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAx UFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K