From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751156AbWEVTl0 (ORCPT ); Mon, 22 May 2006 15:41:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751155AbWEVTl0 (ORCPT ); Mon, 22 May 2006 15:41:26 -0400 Received: from smtp.osdl.org ([65.172.181.4]:37045 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1751157AbWEVTlZ (ORCPT ); Mon, 22 May 2006 15:41:25 -0400 Date: Mon, 22 May 2006 12:40:49 -0700 (PDT) From: Linus Torvalds To: Ingo Molnar cc: Andrew Morton , Zachary Amsden , jakub@redhat.com, rusty@rustcorp.com.au, linux-kernel@vger.kernel.org, virtualization@lists.osdl.org, kraxel@suse.de Subject: Re: [PATCH] Gerd Hoffman's move-vsyscall-into-user-address-range patch In-Reply-To: <20060522190947.GA6730@elte.hu> Message-ID: References: <1147759423.5492.102.camel@localhost.localdomain> <20060516064723.GA14121@elte.hu> <1147852189.1749.28.camel@localhost.localdomain> <20060519174303.5fd17d12.akpm@osdl.org> <20060522162949.GG30682@devserv.devel.redhat.com> <4471EA60.8080607@vmware.com> <20060522101454.52551222.akpm@osdl.org> <20060522172710.GA22823@elte.hu> <20060522190947.GA6730@elte.hu> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 22 May 2006, Ingo Molnar wrote: > > But wrt. binary compatibility, the vdso (ignoring for a moment that it's > tied to other parts of glibc) is kind of border line. Nothing but glibc > knows about its internal structure. So i dont think "binary > compatibility" per se is violated: no app breaks. This is more analogous > to the situation where say old modutils cannot read new modules and the > kernel wont boot at all. No it's not. This is totally different from a 2.4.x -> 2.6.x breakage. This is about a kernel that used to work (2.6.16) and one that would not (2.6.17). It's _that_ simple. No ifs, buts, maybe's or anything else. Linus