Received: by 10.223.185.116 with SMTP id b49csp79413wrg; Mon, 19 Feb 2018 17:09:33 -0800 (PST) X-Google-Smtp-Source: AH8x226qLSsunyzQyWEIDiqml/fczmDLShD8nJ9FGNo2uDOhrgzmhuQFcgSx33vGc1jwgSTNbeIY X-Received: by 2002:a17:902:9895:: with SMTP id s21-v6mr15683209plp.297.1519088973553; Mon, 19 Feb 2018 17:09:33 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1519088973; cv=none; d=google.com; s=arc-20160816; b=i2k/dq1cCkwUE8cGeVnmmxyANgA0Rz1QGksvj3A5iA8Zmk5+IRPBTZBtNzSNw7tsar naLhbFUaHgqpDu0Rsjeu/XPpNVuGeP36Pj7ox2I6q9qui7yKte9kkWKeLxAFgw/tkcLh XI9/wFcOU6QOj2oyvULPJB8aRnrctAijxNhDdPXkWh+xY0nhVFZkChyKUaqfOxVwQg0I 4mmW32JyMpEoWSjXojmZe9dj7zZMdbDCm6JUc4QgvPCvPgyJmV9IgeO1ClXD0wIK0hwv pxWhKNwjV8LTE52USXCK6tSBAuxRmZhD3nCrRe9/QnoDEAZjGWTxIUf2Fsnfh0tC03xz WVcQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:content-transfer-encoding :dlp-reaction:dlp-version:dlp-product:content-language :accept-language:in-reply-to:references:message-id:date:thread-index :thread-topic:subject:cc:to:from:arc-authentication-results; bh=BkAxm4yqmRjWj43FQz0jYs+cmPXpor8yW+2YUPpzfl4=; b=u1Ew626+x0/64Xu5e58ff20HrYXMPAtEgKvKRMLdCoytNfNtxJHJDMIQJSAC9DX6X3 6eSv+87PMTXnMpOv7D3WHYopfpDjfh4W77LnWkz4nnt57hxzqNaSHK0zhW8ZzVsCKXlH VsnxuWJuumMWXvB/ga2cQUWRnqdyKYVdWvtmhN9CQBrq1uItUxaIIFCpKymsiqbwUTan l9u5N9u52umF6ZBPpHwTT+UuMRhyha00Tm8lz6O7Bx68dj+ZOYgXkSoUQ5R9yZYyUHDG V6MSetvDX2j7wQ3FY6nvXaUrATLUDGFwp0sHc7o3HfOLBwV20nZKBglmx3BC5RJrPpjy BVPA== ARC-Authentication-Results: i=1; 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 Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id f10si7405197pge.494.2018.02.19.17.09.19; Mon, 19 Feb 2018 17:09:33 -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 S932316AbeBTBIg (ORCPT + 99 others); Mon, 19 Feb 2018 20:08:36 -0500 Received: from mga03.intel.com ([134.134.136.65]:26280 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932273AbeBTBIe (ORCPT ); Mon, 19 Feb 2018 20:08:34 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 19 Feb 2018 17:08:34 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,537,1511856000"; d="scan'208";a="205422369" Received: from orsmsx106.amr.corp.intel.com ([10.22.225.133]) by fmsmga005.fm.intel.com with ESMTP; 19 Feb 2018 17:08:33 -0800 Received: from orsmsx115.amr.corp.intel.com (10.22.240.11) by ORSMSX106.amr.corp.intel.com (10.22.225.133) with Microsoft SMTP Server (TLS) id 14.3.319.2; Mon, 19 Feb 2018 17:08:32 -0800 Received: from orsmsx103.amr.corp.intel.com ([169.254.5.179]) by ORSMSX115.amr.corp.intel.com ([169.254.4.94]) with mapi id 14.03.0319.002; Mon, 19 Feb 2018 17:08:32 -0800 From: "Van De Ven, Arjan" To: Alan Cox , Linus Torvalds CC: "valdis.kletnieks@vt.edu" , Jon Masters , David Woodhouse , Paolo Bonzini , "tglx@linutronix.de" , "x86@kernel.org" , "kvm@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "Hansen, Dave" , Ingo Molnar Subject: RE: [PATCH 2/2] x86/speculation: Support "Enhanced IBRS" on future CPUs Thread-Topic: [PATCH 2/2] x86/speculation: Support "Enhanced IBRS" on future CPUs Thread-Index: AQHTpBYQl8Dyc4mRm0iZ20KRHB9/vaOif+eAgAADjgCAABy9AIAABnAAgAAEXACAAAFigIAEqxQAgAACw4CAAAOrgIAAC+oAgAASX4CABXcSgP//eu2wgACJV4D//3ujYIAAie+AgAAInACAAAVygP//ewJA Date: Tue, 20 Feb 2018 01:08:32 +0000 Message-ID: <0575AF4FD06DD142AD198903C74E1CC87A619290@ORSMSX103.amr.corp.intel.com> References: <1518449255-2182-1-git-send-email-dwmw@amazon.co.uk> <1518449255-2182-2-git-send-email-dwmw@amazon.co.uk> <7e2e5ad1-49b6-1fdb-4a62-8ad6aefc30a0@redhat.com> <1518509708.12890.33.camel@infradead.org> <27c85759-e662-d281-f8a0-0a80ca8ee18f@redhat.com> <1518517262.12890.43.camel@infradead.org> <1518518198.12890.48.camel@infradead.org> <02bd3fdd-1b73-6cab-fb09-38ba933396bd@redhat.com> <1518775136.7876.13.camel@infradead.org> <75287047-77a0-e0ff-c2e8-61c81641251e@redhat.com> <1518776517.7876.21.camel@infradead.org> <1518783021.7876.34.camel@infradead.org> <4882860e-23c5-75b3-ac02-c700f615156e@jonmasters.org> <0575AF4FD06DD142AD198903C74E1CC87A61923C@ORSMSX103.amr.corp.intel.com> <10373.1519084385@turing-police.cc.vt.edu> <0575AF4FD06DD142AD198903C74E1CC87A619255@ORSMSX103.amr.corp.intel.com> <20180220001301.70101e1d@alans-desktop> <20180220010319.19c60053@alans-desktop> In-Reply-To: <20180220010319.19c60053@alans-desktop> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-version: 11.0.0.116 dlp-reaction: no-action x-originating-ip: [10.22.254.138] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org PiA+IE9uIE1vbiwgRmViIDE5LCAyMDE4IGF0IDQ6MTMgUE0sIEFsYW4gQ294IDxnbm9tZXNAbHhv cmd1ay51a3V1Lm9yZy51az4NCj4gd3JvdGU6DQo+ID4gPg0KPiA+ID4gSW4gdGhlb3J5IHRoZXJl J3Mgbm90aGluZyBzdG9wcGluZyBhIGd1ZXN0IGdldHRpbmcgYSAneW91IGFyZSBhYm91dCB0bw0K PiA+ID4gZ2Fpbi9sb3NlIElCUlMnIG1lc3NhZ2Ugb3IgaGF2aW5nIGEgbmV3ICdDUFUnIGhvdHBs dWdnZWQgYW5kIHRoZSBvbGQgb25lDQo+ID4gPiByZW1vdmVkLg0KPiA+DQo+ID4gSSdtIG5vdCBj b252aW5jZWQgd2UgaGFuZGxlIHRoZSBjYXNlIG9mIGhvdHBsdWcgQ1BVJ3Mgd2l0aCBkaWZmZXJl bnQNCj4gPiBDUFUgbW9kZWxzIGNvcnJlY3RseS4NCj4gDQo+IFdlIGRvbid0LiBBbmQgZXZlbiBp ZiB3ZSBkaWQgdGhlIHVzZXIgc3BhY2UgZG9lc24ndC4gSXQgd291bGQgYmUgYQ0KPiBwYWluZnVs IHRhc2sgdG8gcmVzb2x2ZS4NCg0KDQppbiBhIGNsb3VkIHdvcmxkIGl0IGVuZHMgdXAgYmVpbmcg dGhlIGxhdW5jaC9yZXN0YXJ0IG9mIHRoZSBWTSBpbiByZWFsaXR5Lg0KSnVzdCB0aGUgSklUIGNh Y2hlcyBhbGwgb3ZlciBpbiB1c2Vyc3BhY2UgbWFrZSB0aGlzIGNhc2Ugbm90IHByZXR0eS4NCg0K QW5kIHdlIGFzIGtlcm5lbCBkb24ndCBldmVuIHJlYWxseSBkbyBtaXhlZCBjcHVzIHdpdGhvdXQg aG90cGx1ZyBhZmFpY3QNCihvdGhlciB0aGFuIG1heWJlIHRha2luZyBsb3dlc3Qgc3Vic2V0LCB3 aGlsZSB0aGUgY2FzZSBoZXJlIHdvdWxkIGJlIHRoZSBvcHBvc2l0ZSBkaXJlY3Rpb24pDQoNCg0K