From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753993AbaCKAjj (ORCPT ); Mon, 10 Mar 2014 20:39:39 -0400 Received: from mx1.redhat.com ([209.132.183.28]:51825 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753106AbaCKAji (ORCPT ); Mon, 10 Mar 2014 20:39:38 -0400 Date: Mon, 10 Mar 2014 20:38:56 -0400 From: Dave Jones To: Andy Lutomirski Cc: "H. Peter Anvin" , Linus Torvalds , X86 ML , Stefani Seibold , Andreas Brief , Martin Runge , Linux Kernel Mailing List Subject: Re: [PATCH] x86: Remove compat vdso support Message-ID: <20140311003856.GA4203@redhat.com> Mail-Followup-To: Dave Jones , Andy Lutomirski , "H. Peter Anvin" , Linus Torvalds , X86 ML , Stefani Seibold , Andreas Brief , Martin Runge , Linux Kernel Mailing List References: <775280bd6cab6345a1d340e7038d2011763bf81b.1394492341.git.luto@amacapital.net> <531E5531.20409@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 10, 2014 at 05:19:27PM -0700, Andy Lutomirski wrote: > On Mon, Mar 10, 2014 at 5:13 PM, H. Peter Anvin wrote: > > On 03/10/2014 05:12 PM, Andy Lutomirski wrote: > >> The compat vDSO is a complicated hack that's needed to maintain > >> compatibility with a small range of never-released glibc versions. > >> > >> This removes it and replaces it with a much simpler hack: a config > >> option to disable the 32-bit vDSO by default. > >> > >> Signed-off-by: Andy Lutomirski > > > > Can we verify this works correctly on the affected distributions? > > It works correctly on Fedora 20 32-bit and 64-bit. I went and dug through the SRPMs at https://archives.fedoraproject.org Fedora hasn't ever shipped with COMPAT_VDSO enabled. Before FC6 (kernel 2.6.18), the option never existed. Dave