linux-kernel - Re: [PATCH] drm/i915,agp/intel: Do not clear stolen entries

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Message-ID: <20110123175945.GA1760@nowhere>
Date:	Sun, 23 Jan 2011 18:59:49 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Chris Wilson <chris@...is-wilson.co.uk>
Cc:	linux-kernel@...r.kernel.org,
	Daniel Vetter <daniel.vetter@...ll.ch>
Subject: Re: [PATCH] drm/i915,agp/intel: Do not clear stolen entries

On Sun, Jan 23, 2011 at 11:01:12AM +0000, Chris Wilson wrote:
> We can only utilize the stolen portion of the GTT if we are in sole
> charge of the hardware. This is only true if using GEM and KMS,
> otherwise VESA continues to access stolen memory.
> 
> Reported-by: Arnd Bergmann <arnd@...db.de>
> Reported-by: Frederic Weisbecker <fweisbec@...il.com>
> Tested-by: Jiri Olsa <jolsa@...hat.com>
> Cc: Daniel Vetter <daniel.vetter@...ll.ch>
> Signed-off-by: Chris Wilson <chris@...is-wilson.co.uk>
> ---
> 
> Frederic, updated patch attached. The bug was that clear_range took (start,
> count) and I was passing in (start, end) so we were dereferencing past the
> end of the valid pages.
> -Chris

Works well, thank you :)

Tested-by: Frederic Weisbecker <fweisbec@...il.com>
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