From owner-svn-src-all@FreeBSD.ORG Fri Jul 27 08:35:55 2012 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id B8257106566B; Fri, 27 Jul 2012 08:35:55 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from mail.zoral.com.ua (mx0.zoral.com.ua [91.193.166.200]) by mx1.freebsd.org (Postfix) with ESMTP id 111618FC0A; Fri, 27 Jul 2012 08:35:54 +0000 (UTC) Received: from skuns.kiev.zoral.com.ua (localhost [127.0.0.1]) by mail.zoral.com.ua (8.14.2/8.14.2) with ESMTP id q6R8Zfvp054808; Fri, 27 Jul 2012 11:35:41 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.5/8.14.5) with ESMTP id q6R8ZTCD003550; Fri, 27 Jul 2012 11:35:29 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.5/8.14.5/Submit) id q6R8ZTxl003549; Fri, 27 Jul 2012 11:35:29 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Fri, 27 Jul 2012 11:35:29 +0300 From: Konstantin Belousov To: Peter Grehan Message-ID: <20120727083529.GA2676@deviant.kiev.zoral.com.ua> References: <500FE6AE.8070706@FreeBSD.org> <20120726001659.M5406@besplex.bde.org> <50102C94.9030706@FreeBSD.org> <20120725180537.GO2676@deviant.kiev.zoral.com.ua> <50103C61.8040904@FreeBSD.org> <20120726170837.Q2536@besplex.bde.org> <20120726104918.GW2676@deviant.kiev.zoral.com.ua> <20120726213001.K3621@besplex.bde.org> <20120726175947.GZ2676@deviant.kiev.zoral.com.ua> <5011901B.1060008@freebsd.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="2A9w/LA8eksItR+6" Content-Disposition: inline In-Reply-To: <5011901B.1060008@freebsd.org> User-Agent: Mutt/1.4.2.3i X-Virus-Scanned: clamav-milter 0.95.2 at skuns.kiev.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-4.0 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on skuns.kiev.zoral.com.ua Cc: Jim Harris , src-committers@freebsd.org, svn-src-all@freebsd.org, Andriy Gapon , Bruce Evans , svn-src-head@freebsd.org, Jung-uk Kim Subject: Re: svn commit: r238755 - head/sys/x86/x86 X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Jul 2012 08:35:55 -0000 --2A9w/LA8eksItR+6 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Jul 26, 2012 at 12:44:43PM -0600, Peter Grehan wrote: > >Yes, CPUID or LFENCE is enough to fix the failure. >=20 > CPUID causes an unconditional exit in VT-x/SVM so it would be best to=20 > avoid that if possible. The only place where the use of CPUID in tsc patch seems to be reasonable is at the SMP test, since it is too much burden to check SSE2/Intel/AMD nuances at the boot time, to be redone later anyway. Would it be a serious issue for monitors to get several thousands of CPUID traps at boot only ? --2A9w/LA8eksItR+6 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (FreeBSD) iEYEARECAAYFAlASUtAACgkQC3+MBN1Mb4ht5ACgzge7DMx6jbg6iSoflK/yARnf SfAAn15zcRoGLf9N3c4mf4jdl2gGwnHt =rxY/ -----END PGP SIGNATURE----- --2A9w/LA8eksItR+6--