linux-kernel - Re: [Intel-gfx] Major 2.6.38 / 2.6.39 / 3.0 regression ignored?

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Message-ID: <CADnq5_NG4eZ0nc-Xk+hvpaMhLz18=W3V7+AWxf+_s8GXpZmwmg@mail.gmail.com>
Date:	Sat, 23 Jul 2011 11:10:53 -0400
From:	Alex Deucher <alexdeucher@...il.com>
To:	Kirill Smelkov <kirr@....spb.ru>
Cc:	Keith Packard <keithp@...thp.com>,
	Pekka Enberg <penberg@...nel.org>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Luke-Jr <luke@...hjr.org>, intel-gfx@...ts.freedesktop.org,
	LKML <linux-kernel@...r.kernel.org>,
	dri-devel@...ts.freedesktop.org, "Rafael J. Wysocki" <rjw@...k.pl>,
	Ray Lee <ray-lk@...rabbit.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [Intel-gfx] Major 2.6.38 / 2.6.39 / 3.0 regression ignored?

On Fri, Jul 22, 2011 at 5:31 PM, Kirill Smelkov <kirr@....spb.ru> wrote:
> On Sat, Jul 23, 2011 at 01:08:14AM +0400, Kirill Smelkov wrote:
>> On Fri, Jul 22, 2011 at 01:50:04PM -0700, Keith Packard wrote:
>
>> > You're right, of course -- UMS is a huge wart on the kernel driver at
>> > this point, keeping it working while also adding new functionality
>> > continues to cause challenges. We tend to expect that most people will
>> > run reasonably contemporaneous kernel and user space code, and so three
>> > years after the switch, it continues to surprise us when someone
>> > actually tries UMS.
>>
>> We are planning upgrade to KMS too. The kernel is upgraded more often
>> compared to userspace, because of already mentioned (thanks!) "no
>> regression" rule. Userspace is more complex and more work in my context,
>> so it is lagging, but eventually we'll get there.
>
> Also wanted to say, that if whole X could be built, like the kernel, from one
> repo without multirepo-setup tool, with 100% reliable working
> incremental rebuild, etc... it would be a bit easier to upgrade X too.
>
> Sorry for being a bit offtopic, could not resist. I was keeping that
> though in my head for ~ 2 years already, and now had a chance to mention it.

You don't have to rebuild all of X to use KMS.  In most cases, you
just need to update the ddx for your card.

Alex
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