linux-kernel - Re: Making Xorg easier to test (was Re: [git pull] drm request 3)

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Date:	Fri, 5 Mar 2010 18:11:43 +0200
From:	Daniel Stone <daniel@...ishbar.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	"Carlos R. Mafra" <crmafra2@...il.com>,
	Ben Skeggs <skeggsb@...il.com>, Dave Airlie <airlied@...ux.ie>,
	linux-kernel@...r.kernel.org,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Pekka Enberg <penberg@...helsinki.fi>, dri-devel@...ts.sf.net,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: Making Xorg easier to test (was Re: [git pull] drm request 3)

Hi,

On Fri, Mar 05, 2010 at 07:53:46AM -0800, Linus Torvalds wrote:
> These days, there's a few dependencies you need to know about (I do agree 
> that from a user perspective the thing might have been made a bit _too_ 
> modular)

Indeed, no argument here.

> That said, the _one_ thing I really wish could be done would be to make it 
> easier to install things side-by-side - and with the modularization, you 
> really do want to do it module-by-module. One of the things that makes it 
> so easy to test the kernel is that when you install one kernel, that 
> doesn't affect the others, and you can go back-and-forth in testing. 
> That's really important, because it makes testing trivial and non-scary 
> even in the presense of issues that makes the new version unusable.

FWIW, Option "ModulePath" in xorg.conf lets you more or less do this;
the usual approach is to install your new server + drivers into a
separate prefix.

Cheers,
Daniel

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