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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 42623C433F5 for ; Fri, 18 Feb 2022 21:11:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239620AbiBRVLv (ORCPT ); Fri, 18 Feb 2022 16:11:51 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:52308 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231464AbiBRVLt (ORCPT ); Fri, 18 Feb 2022 16:11:49 -0500 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.86.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 641FC1133D6 for ; Fri, 18 Feb 2022 13:11:30 -0800 (PST) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-217--zoMOBvpMVq-lx5Sa2SNmQ-1; Fri, 18 Feb 2022 21:11:27 +0000 X-MC-Unique: -zoMOBvpMVq-lx5Sa2SNmQ-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) by AcuMS.aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) with Microsoft SMTP Server (TLS) id 15.0.1497.28; Fri, 18 Feb 2022 21:11:25 +0000 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.028; Fri, 18 Feb 2022 21:11:25 +0000 From: David Laight To: 'Andrew Cooper' , Peter Zijlstra , "x86@kernel.org" , "joao@overdrivepizza.com" , "hjl.tools@gmail.com" , "jpoimboe@redhat.com" CC: "linux-kernel@vger.kernel.org" , "ndesaulniers@google.com" , "keescook@chromium.org" , "samitolvanen@google.com" , "mark.rutland@arm.com" , "alyssa.milburn@intel.com" Subject: RE: [PATCH 05/29] x86: Base IBT bits Thread-Topic: [PATCH 05/29] x86: Base IBT bits Thread-Index: AQHYJOs4MY/fho88+Uaa/a9ERSiwKKyZyEiAgAAEwLA= Date: Fri, 18 Feb 2022 21:11:25 +0000 Message-ID: References: <20220218164902.008644515@infradead.org> <20220218171408.867389898@infradead.org> <96209eb7-f95c-41c5-12c1-da4dbbbf67f3@citrix.com> In-Reply-To: <96209eb7-f95c-41c5-12c1-da4dbbbf67f3@citrix.com> Accept-Language: en-GB, 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 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogQW5kcmV3IENvb3Blcg0KPiBTZW50OiAxOCBGZWJydWFyeSAyMDIyIDIwOjUwDQo+IA0K PiBPbiAxOC8wMi8yMDIyIDE2OjQ5LCBQZXRlciBaaWpsc3RyYSB3cm90ZToNCj4gPiArLyoNCj4g PiArICogQSBiaXQgY29udm9sdXRlZCwgYnV0IG1hdGNoZXMgYm90aCBlbmRicjMyIGFuZCBlbmRi cjY0IHdpdGhvdXQNCj4gPiArICogaGF2aW5nIGVpdGhlciBhcyBsaXRlcmFsIGluIHRoZSB0ZXh0 Lg0KPiA+ICsgKi8NCj4gPiArc3RhdGljIGlubGluZSBib29sIGlzX2VuZGJyKGNvbnN0IHZvaWQg KmFkZHIpDQo+ID4gK3sNCj4gPiArCXVuc2lnbmVkIGludCB2YWwgPSB+Kih1bnNpZ25lZCBpbnQg KilhZGRyOw0KPiA+ICsJdmFsIHw9IDB4MDEwMDAwMDBVOw0KPiA+ICsJcmV0dXJuIHZhbCA9PSB+ MHhmYTFlMGZmMzsNCj4gPiArfQ0KPiANCj4gQXQgdGhpcyBwb2ludCwgSSBmZWVsIEkndmUgZWFy bmVkIGFuICJJIHRvbGQgeW91IHNvIi4gOikNCj4gDQo+IENsYW5nIDEzIHNlZXMgc3RyYWlnaHQg dGhyb3VnaCB0aGUgdHJpY2tlcnkgYW5kIGdlbmVyYXRlczoNCj4gDQo+IGlzX2VuZGJyOsKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCAj IEBpc19lbmRicg0KPiDCoMKgwqDCoMKgwqDCoCBtb3ZswqDCoMKgICQtMTY3NzcyMTcsICVlYXjC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgIyBpbW0gPSAweEZFRkZGRkZGDQo+IMKgwqDC oMKgwqDCoMKgIGFuZGzCoMKgwqAgKCVyZGkpLCAlZWF4DQo+IMKgwqDCoMKgwqDCoMKgIGNtcGzC oMKgwqAgJC05ODY5MzEzMywgJWVheMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCAjIGlt bSA9IDB4RkExRTBGRjMNCj4gwqDCoMKgwqDCoMKgwqAgc2V0ZcKgwqDCoCAlYWwNCj4gwqDCoMKg wqDCoMKgwqAgcmV0cQ0KDQpJIHRoaW5rIGl0IGlzIGVub3VnaCB0byBhZGQ6DQoJYXNtKCIiLCAi PXIiICh2YWwpKTsNCnNvbWV3aGVyZSBpbiB0aGUgbWlkZGxlLg0KKEkgdGhpbmsgdGhhdCBpcyBy aWdodCBmb3IgYXNtIHdpdGggaW5wdXQgYW5kIG91dHB1dCBpbiB0aGUgc2FtZQ0KcmVnaXN0ZXIu KQ0KVGhlcmUgbWlnaHQgYmUgYSBISURFX0ZPUl9PUFRJTUlTRVIoKSBkZWZpbmUgdGhhdCBkb2Vz IHRoYXQuDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1s ZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJh dGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=