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[209.132.180.67]) by mx.google.com with ESMTP id b5si2167214pff.349.2018.02.23.10.20.02; Fri, 23 Feb 2018 10:20:16 -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 S1752042AbeBWSSz (ORCPT + 99 others); Fri, 23 Feb 2018 13:18:55 -0500 Received: from mga02.intel.com ([134.134.136.20]:34412 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751643AbeBWSSy (ORCPT ); Fri, 23 Feb 2018 13:18:54 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 23 Feb 2018 10:18:53 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.47,383,1515484800"; d="scan'208";a="20587920" Received: from orsmsx106.amr.corp.intel.com ([10.22.225.133]) by orsmga006.jf.intel.com with ESMTP; 23 Feb 2018 10:18:53 -0800 Received: from orsmsx159.amr.corp.intel.com (10.22.240.24) by ORSMSX106.amr.corp.intel.com (10.22.225.133) with Microsoft SMTP Server (TLS) id 14.3.319.2; Fri, 23 Feb 2018 10:18:52 -0800 Received: from orsmsx103.amr.corp.intel.com ([169.254.5.179]) by ORSMSX159.amr.corp.intel.com ([169.254.11.243]) with mapi id 14.03.0319.002; Fri, 23 Feb 2018 10:18:52 -0800 From: "Van De Ven, Arjan" To: Konrad Rzeszutek Wilk , Paolo Bonzini CC: "valdis.kletnieks@vt.edu" , Jon Masters , David Woodhouse , "tglx@linutronix.de" , "x86@kernel.org" , "kvm@vger.kernel.org" , "torvalds@linux-foundation.org" , "linux-kernel@vger.kernel.org" , "Hansen, Dave" , Ingo Molnar Subject: RE: RSB Alternative bit in IA32_ARCH_CAPABILITIES Was:Re: [PATCH 2/2] x86/speculation: Support "Enhanced IBRS" on future CPUs Thread-Topic: RSB Alternative bit in IA32_ARCH_CAPABILITIES Was:Re: [PATCH 2/2] x86/speculation: Support "Enhanced IBRS" on future CPUs Thread-Index: AQHTpBYQl8Dyc4mRm0iZ20KRHB9/vaOif+eAgAADjgCAABy9AIAABnAAgAAEXACAAAFigIAEqxQAgAACw4CAAAOrgIAAC+oAgAASX4CABXcSgP//eu2wgACJV4D//3ujYIABSuKA//+iJWAAEiKggACeDpyAABCQEzA= Date: Fri, 23 Feb 2018 18:18:52 +0000 Message-ID: <0575AF4FD06DD142AD198903C74E1CC87A61DDF7@ORSMSX103.amr.corp.intel.com> References: <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> <0575AF4FD06DD142AD198903C74E1CC87A619465@ORSMSX103.amr.corp.intel.com> <2159cdc0-c30d-3bf8-1c25-74bff46a1e91@redhat.com> <20180223181237.GA19321@char.us.oracle.com> In-Reply-To: <20180223181237.GA19321@char.us.oracle.com> 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: [10.22.254.139] 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 PiBUbyBhZGQgYSBiaXQgbW9yZSB0byB0aGlzLCBJbnRlbCBqdXN0IHVwZGF0ZWQgdGhlaXINCj4g SUEzMl9BUkNIX0NBUEFCSUxJVElFU19NU1INCj4gdG8gaGF2ZSBhIG5ldyBiaXQgdG8gc2FtcGxl IHRvIGZpZ3VyZSBvdXQgd2hldGhlciB5b3UgbmVlZCBJQlJTIG9yIG5vdA0KPiBkdXJpbmcgcnVu dGltZS4NCg0KYWN0dWFsbHkgd2UgdXBkYXRlZCB0aGUgZG9jdW1lbnQgd2hlbiB5b3UgbmVlZCBS U0Igc3R1ZmZpbmcuDQpiYXNlZCBvbiB0aGUgcmVxdWVzdCBvZiB2YXJpb3VzIGZvbGtzIGhlcmUg b24gTEtNTC4NCg0K