From mboxrd@z Thu Jan 1 00:00:00 1970 From: dann frazier Subject: Re: NTPL transition Date: Thu, 4 Sep 2008 11:49:00 -0600 Message-ID: <20080904174859.GA19630@colo.lackof.org> References: <20080904114551.GA18877@tilt.dandreoli.com> <119aab440809040713m2a448cd4sea02cd2df7d7b42c@mail.gmail.com> <20080904152329.GA24316@colo.lackof.org> <119aab440809040831m2a4a3cffy3a8fbc747ca3b4a2@mail.gmail.com> <20080904160407.GB24316@colo.lackof.org> <119aab440809041029v6d7592bau15a2307099e5f02e@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Debian HPPA Port List , linux-parisc To: Carlos O'Donell Return-path: In-Reply-To: <119aab440809041029v6d7592bau15a2307099e5f02e@mail.gmail.com> List-ID: List-Id: linux-parisc.vger.kernel.org On Thu, Sep 04, 2008 at 01:29:06PM -0400, Carlos O'Donell wrote: > On Thu, Sep 4, 2008 at 12:04 PM, dann frazier wrote: > > If we continue to use libc6 as the package name as we're currently > > doing, at some point libc will get upgraded to the NPTL interface and > > things will start crashing immediately. I asked if we could just do > > "whatever x86 did", and kyle said that we have a problem they didn't - > > our data nptl/lt data structures are incompatible. > > > > We can deal with that to an extent by adding a second libc package, > > e.g., libc6.1. But, jejb pointed out that, since most libs depend on > > libc, we'll need to be able to have libs for both interfaces at the > > same time to support a transitional upgrade - and that implies an > > SONAME bump for every C library. > > > > Hopefully there's an easier way, but I don't know of one. > > How far away is queeze? There's no set timeframe - but I think we can easily assume it will be at least 1 year after lenny, which is frozen for release now. > I have to go write some, code, and test some changes, and get back to > the list with some options. > > Namely: > > Is it possible to change the pthread structures such that writing the > compatibility code is easy? > - Leave padding where the old lock words were and detect statically > initialized locks by looking at these words? > - Does this break Gentoo? I think they just emerge world. > - Does this break Ubuntu hppa? Probably. thanks Carlos -- dann frazier