From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Bottomley Subject: Re: Request for linux-next inclusion of the voyager tree Date: Wed, 10 Jun 2009 16:02:39 +0000 Message-ID: <1244649759.4109.75.camel@mulgrave.site> References: <1244477423.4079.228.camel@mulgrave.site> <20090609202130.GA5291@elte.hu> <20090610004126.491508c9@lxorguk.ukuu.org.uk> <20090609235647.GE23846@elte.hu> <20090610153954.GA3464@elte.hu> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from bedivere.hansenpartnership.com ([66.63.167.143]:45345 "EHLO bedivere.hansenpartnership.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754907AbZFJQCl (ORCPT ); Wed, 10 Jun 2009 12:02:41 -0400 In-Reply-To: <20090610153954.GA3464@elte.hu> Sender: linux-next-owner@vger.kernel.org List-ID: To: Ingo Molnar Cc: Linus Torvalds , Thomas Gleixner , Alan Cox , "H. Peter Anvin" , Andrew Morton , Stephen Rothwell , linux-next@vger.kernel.org On Wed, 2009-06-10 at 17:39 +0200, Ingo Molnar wrote: > * Linus Torvalds wrote: > > > On Wed, 10 Jun 2009, Thomas Gleixner wrote: > > > > > > > Alan is definitely right that we're likely to see more of the "non-PC" > > > > platforms as x86 tries to do embedded. > > > > > > I agree, but the way voyager is done is _not_ a good example for the > > > embedded x86 folks who will probably start to send in their scoop in > > > the foreseable future. > > > > > > I'm not fundamentally against bringing Voyager back, but it > > > needs to go through a useful patch submission and review process > > > and not by forcing voyager wreckage into our code base. > > > > Ok, thanks. This was exactly the kind of thing I wanted to hear. > > It does sound like the Voyager tree is doing things I myself > > wouldn't approve of as a maintainer, so I can't really say that > > I'm upset by the x86 maintainers then not pulling it. > > I also take back the "it's obsolete" and "it didnt even build" > portion of my NAK - that was overboard as Alan and you pointed it > out. > > I think we can work out something and a clear(er) platform driver > interface abstraction with a thin cross section to generic x86 code > will be helpful to a lot more than just Voyager. > > In fact we have implemented that largely and it went upstream in > 2.6.30, via the massive changes around this bit: > > 6bda2c8: x86: remove subarchitecture support > > This is what _already_ happened to other (ex-)subarchitecture code: > visws, numaq were frequent trouble spots too, and with the > x86-quirks model they basically vanished from our regression lists. > > So it's a successful model in practice, and if Voyager is done in a > similar way we wont see many Voyager problems in the future either. OK, so this is an acceptable compromise for me too. What I think now is needed (from me) are three patch sets: 1. The final subarchitecture cleanups 2. The quirk model/smp ops additions 3. The voyager put back. James