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[209.132.180.67]) by mx.google.com with ESMTP id 30-v6si5010849pla.812.2018.02.19.15.43.05; Mon, 19 Feb 2018 15:43:20 -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 S932262AbeBSXm1 (ORCPT + 99 others); Mon, 19 Feb 2018 18:42:27 -0500 Received: from mga18.intel.com ([134.134.136.126]:27310 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932232AbeBSXm0 (ORCPT ); Mon, 19 Feb 2018 18:42:26 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 19 Feb 2018 15:42:25 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,537,1511856000"; d="scan'208";a="29202249" Received: from orsmsx102.amr.corp.intel.com ([10.22.225.129]) by orsmga003.jf.intel.com with ESMTP; 19 Feb 2018 15:42:25 -0800 Received: from orsmsx116.amr.corp.intel.com (10.22.240.14) by ORSMSX102.amr.corp.intel.com (10.22.225.129) with Microsoft SMTP Server (TLS) id 14.3.319.2; Mon, 19 Feb 2018 15:42:25 -0800 Received: from orsmsx103.amr.corp.intel.com ([169.254.5.179]) by ORSMSX116.amr.corp.intel.com ([169.254.7.69]) with mapi id 14.03.0319.002; Mon, 19 Feb 2018 15:42:25 -0800 From: "Van De Ven, Arjan" To: Jon Masters , David Woodhouse , Paolo Bonzini , "tglx@linutronix.de" , "x86@kernel.org" , "kvm@vger.kernel.org" , "torvalds@linux-foundation.org" , "linux-kernel@vger.kernel.org" , "Hansen, Dave" CC: 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//eu2w Date: Mon, 19 Feb 2018 23:42:24 +0000 Message-ID: <0575AF4FD06DD142AD198903C74E1CC87A61923C@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> In-Reply-To: <4882860e-23c5-75b3-ac02-c700f615156e@jonmasters.org> 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 PiANCj4gPj4+IEV2ZW4gaWYgdGhlIGd1ZXN0IGRvZXNuJ3QgaGF2ZS9zdXBwb3J0IElCUlNfQUxM LCBhbmQgaXMgZnJvYmJpbmcgdGhlDQo+ID4+PiAobm93IGVtdWxhdGVkKSBNU1Igb24gZXZlcnkg a2VybmVsIGVudHJ5L2V4aXQsIHRoYXQncyAqc3RpbGwqIGdvaW5nIHRvDQo+ID4+PiBiZSBhIG1l dHJpYyBzaGl0bG9hZCBmYXN0ZXIgdGhhbiB3aGF0IGl0ICp0aG91Z2h0KiBpdCB3YXMgZG9pbmcu DQo+IA0KPiBJcyB0aGVyZSBhbnkgaW5kaWNhdGlvbi9sb2cgdG8gdGhlIGFkbWluIHRoYXQgVk0g ZG9lc24ndCBrbm93IGFib3V0DQo+IElCUlNfQUxMIGFuZCBpcyBjb25zdGFudGx5IHVzZWxlc3Ns eSB3cml0aW5nIHRvIGFuIGVtdWxhdGVkIE1TUj8NCj4gDQo+IFdoaWxlIGl0J3MgcHJvYmFibHkg dHJ1ZSB0aGF0IHRoZSBvdmVyaGVhZCBpbiB0aW1lIGlzIHNpbWlsYXIgdG8gKG9yDQo+IGJldHRl ciB0aGFuKSBhbiBhY3R1YWwgSUJSUyBNU1Igd3JpdGUsIGlmIHRoZSBhZG1pbi91c2VyIGtub3dz IHRoZSBWTQ0KPiBuZWVkcyB1cGRhdGluZywgdGhlbiB0aGVyZSdzIGEgZmlnaHRpbmcgY2hhbmNl IHRoYXQgdGhleSBtaWdodCBkbyBzby4NCg0KdGhlIGd1ZXN0IGlzIG5vdCB0aGUgcHJvYmxlbTsg Z3Vlc3RzIG9idmlvdXNseSB3aWxsIGFscmVhZHkgaG9ub3IgaWYgRW5oYW5jZWQgSUJSUyBpcyBl bnVtZXJhdGVkLg0KVGhlIHByb2JsZW0gaXMgbWl4ZWQgbWlncmF0aW9uIHBvb2xzIHdoZXJlIHRo ZSBoeXBlcnZpc29yIG1heSBuZWVkIHRvIGRlY2lkZSB0byBub3QgcGFzcyB0aGlzIGVudW1lcmF0 aW9uIHRocm91Z2ggdG8gdGhlIGd1ZXN0Lg0KDQo=