Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756087AbcCWTPL (ORCPT ); Wed, 23 Mar 2016 15:15:11 -0400 Received: from outbound.smtp.vt.edu ([198.82.183.121]:53580 "EHLO omr1.cc.vt.edu" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753875AbcCWTPK (ORCPT ); Wed, 23 Mar 2016 15:15:10 -0400 X-Mailer: exmh version 2.8.0 04/21/2012 with nmh-1.6+dev To: Andi Kleen Cc: x86@kernel.org, luto@amacapital.net, linux-kernel@vger.kernel.org, Andi Kleen Subject: Re: [PATCH 5/9] x86: Add documentation for rd/wr fs/gs base From: Valdis.Kletnieks@vt.edu In-Reply-To: <1458576969-13309-6-git-send-email-andi@firstfloor.org> References: <1458576969-13309-1-git-send-email-andi@firstfloor.org> <1458576969-13309-6-git-send-email-andi@firstfloor.org> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1458760485_2429P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Wed, 23 Mar 2016 15:14:45 -0400 Message-ID: <4140.1458760485@turing-police.cc.vt.edu> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1685 Lines: 41 --==_Exmh_1458760485_2429P Content-Type: text/plain; charset=us-ascii On Mon, 21 Mar 2016 09:16:05 -0700, Andi Kleen said: > From: Andi Kleen > > v2: Minor updates to documentation requested in review. > +In addition the kernel needs to explicitly enable these instructions, as it > +may otherwise not correctly context switch the state. Newer Linux > +kernels enable this. When the kernel did not enable the instruction > +they will fault with an #UD exception. Looks OK for now, since the code hasn't actually landed. However, once we know for sure what release, we probably want to replace "Newer" with "4.N or later" or something - particularly if the man-pages project will be using this as source material. --==_Exmh_1458760485_2429P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Exmh version 2.5 07/13/2001 iQIVAwUBVvLrJQdmEQWDXROgAQJrAhAAtSRGc2wa9nkOBll/CY5WjPfiGLs2ba20 MoDqiZNjbreiXfQa+AHueTjJSMTZz6t8fcQGPfo5Jj0z4nzWDw1CSlHZxLRiMWeq W4jikjdUnXFDulPUiD2hPFyO+Q0CemZ+MCI+gb0SbiB8RWUATBYAwPdN2dODGUMm sHcynWr4Y8j4m2rwxqyQSDbONHwCwKr4JaKwwePm3uXvWslz/I2MFNY86RS2CXFi qpUeFwLWa0YiK4hNEfzVH6kbln3mKj/5C7rI5hbaIy91eK6w8AKwgk6SKfvl7jKH mEJCa2RsuipQKBPJ6H2IOZL9K53f03SiH/JmtrFh96NtWZ/P1V+RI+YxU5fufy6w CMWU7a6p+RZbTD0rRRrtypEicvi/NKwKFS0lD8WJNCadG+ncwSbP3bxCL0pP6rl2 caIx9igkCS1lzMQ3QiQidN/V54gzCcGOcT1ZHGyi0B5H+UOXtB2ghQW2D9DiV2Py vnnh5lTFz5zpBv8UgMNwwzb5ejc3ci1IY9E3UpSwdnymyeWMg+JnpG8WyuB5VXAb wMtTyH4tpYUBU5AQFJ6brr5Dlvp4rx8xlrXN4uDEdEJ/4i/AuxQaWZMftSI8tWh3 7FT5qwQsNOssEh45Cv04jWvmHH+mA/78TnZGYPGBfupV1N7I9O6m5ovsLsXj1cAC uSSTH7wKnjg= =Ftph -----END PGP SIGNATURE----- --==_Exmh_1458760485_2429P--