linux-kernel - Re: pgprot_writecombine() and PATs on x86

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Message-Id: <200704252110.49603.ak@suse.de>
Date:	Wed, 25 Apr 2007 21:10:49 +0200
From:	Andi Kleen <ak@...e.de>
To:	Dave Jones <davej@...hat.com>
Cc:	Roland Dreier <rdreier@...co.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	linux-kernel@...r.kernel.org, mst@...lanox.co.il,
	jackm@...lanox.co.il
Subject: Re: pgprot_writecombine() and PATs on x86

On Wednesday 25 April 2007 20:41:08 Dave Jones wrote:
> On Wed, Apr 25, 2007 at 08:19:27PM +0200, Andi Kleen wrote:
>  > On Wednesday 25 April 2007 20:02:26 Roland Dreier wrote:
>  > > Hi Eric,
>  > > 
>  > > Where do your patches to add an implementation of
>  > > pgprot_writecombine() using PATs on x86 stand?  
>  > 
>  > It's on my todo list.
> 
> Whats the status on the code at ftp://ftp.firstfloor.org/pub/ak/pat/patches ?
> I've not given it much more than a quick skim, so I'm not sure what
> it's capable of/what its missing etc..

That code has a couple of problems and is relatively broken

-Andi
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