From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751507Ab0AQGAc (ORCPT ); Sun, 17 Jan 2010 01:00:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751258Ab0AQGAa (ORCPT ); Sun, 17 Jan 2010 01:00:30 -0500 Received: from mtaout03-winn.ispmail.ntl.com ([81.103.221.49]:12847 "EHLO mtaout03-winn.ispmail.ntl.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750961Ab0AQGAa (ORCPT ); Sun, 17 Jan 2010 01:00:30 -0500 From: Ian Campbell To: Brian Gerst Cc: Linus Torvalds , Ingo Molnar , linux-kernel@vger.kernel.org, "H. Peter Anvin" , Thomas Gleixner , Andrew Morton In-Reply-To: <73c1f2161001161618l7b471f48ldb4c33c88eafb7b6@mail.gmail.com> References: <20100116170338.GA17175@elte.hu> <73c1f2161001161618l7b471f48ldb4c33c88eafb7b6@mail.gmail.com> Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-7RfmYpmTDNJARNyUu1uB" Date: Sun, 17 Jan 2010 06:00:23 +0000 Message-ID: <1263708023.14137.1213.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.28.2 X-SA-Exim-Connect-IP: 192.168.1.5 X-SA-Exim-Mail-From: ijc@hellion.org.uk Subject: Re: [GIT PULL] x86 fixes X-SA-Exim-Version: 4.2.1 (built Wed, 25 Jun 2008 17:14:11 +0000) X-SA-Exim-Scanned: Yes (on hopkins.hellion.org.uk) X-Cloudmark-Analysis: v=1.1 cv=ZtHxNT4mZm3rCuM0SmWmgWxeBwJsziC8EqOrwwVkrhA= c=1 sm=0 a=Z4Rwk6OoAAAA:8 a=QaZaC8N7_lZZYo4dmtQA:9 a=lpO_0GIfENMIBLS94uCEImx0phcA:4 a=jbrJJM5MRmoA:10 a=HRkSOGoBkiB3UMvgq-cA:9 a=1v5WaysztmPuIfS4xOWUTJHwk88A:4 a=HpAAvcLHHh0Zw7uRqdWCyQ==:117 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-7RfmYpmTDNJARNyUu1uB Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable On Sat, 2010-01-16 at 19:18 -0500, Brian Gerst wrote:=20 > On Sat, Jan 16, 2010 at 3:34 PM, Linus Torvalds > wrote: > > > > > > On Sat, 16 Jan 2010, Ingo Molnar wrote: > >> > >> Cyrill Gorcunov (1): > >> x86: kernel_thread() -- initialize SS to a known state > > > > This looks bogus. Why does it do it only on x86-64? > > > > Either people care about SS or they don't (the answer, I suspect, is "t= hey > > don't"). But if they care, we should do it on both 32-bit _and_ 64-bit, > > no? >=20 > 32-bit doesn't care about ss or esp since it won't pop them from the > stack when returning to the same privilege level. Right! That's the bit of behaviour I wasn't thinking of. Thanks, Ian. --=20 Ian Campbell Under every stone lurks a politician. -- Aristophanes --=-7RfmYpmTDNJARNyUu1uB Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iEYEABECAAYFAktSp3cACgkQM0+0qS9rzVmJkwCg0sV6XkAspmWWyozWZlyAmLHt 4V4An2wXgu3jhRvisF4hQdexokAxGghN =Glpd -----END PGP SIGNATURE----- --=-7RfmYpmTDNJARNyUu1uB--