linux-kernel - Re: Unable to continue testing of 2.6.25

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Message-ID: <20080219093534.GC6485@one.firstfloor.org>
Date:	Tue, 19 Feb 2008 10:35:34 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Frans Pop <elendil@...net.nl>, linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: Unable to continue testing of 2.6.25

On Mon, Feb 18, 2008 at 08:18:41PM +0100, Ingo Molnar wrote:
> 
> * Andi Kleen <andi@...stfloor.org> wrote:
> 
> > > I've yet to see a user who wants WC. Lets face it, WC *sucks*. This 
> > > is why
> > 
> > Interesting.
> 
> does this refresh your memory:
> 
>   http://lkml.org/lkml/2008/1/10/99

I'm still far from convinced it covers all cases (see also Roland's example)
Arjan might be right for some modern graphics hardware, but there is
a lot more hardware out there than only this, old and new and non graphics
and graphics that Arjan didn't cover.

If Arjan was 100% right then PAT would not be needed at all. I wonder
why Venki/Suresh went through all the pain of resurrecting the old
PAT patchkit then!? Surely there is more about this.

-Andi
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