On Mon, Apr 25, 2011 at 02:45:25PM -0700, Greg KH wrote:
> On Mon, Apr 25, 2011 at 10:16:57PM +0100, Chris Wilson wrote:
> > ... even though it was disabled. A mistake in the handling of fence reuse
> > caused us to skip the vital delay of waiting for the object to finish
> > rendering before changing the register. This resulted in us changing the
> > fence register whilst the bo was active and so causing the blits to
> > complete using the wrong stride or even the wrong tiling. (Visually the
> > effect is that small blocks of the screen look like they have been
> > interlaced). The fix is to wait for the GPU to finish using the memory
> > region pointed to by the fence before changing it.
> > 
> > Backported from f48629cff5bf3a0df923ce0314ace584212afbe7.
> 
> What is that commit id?  I don't see that in Linus's tree.
> 
> > 
> > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=34584
> > Cc: Andy Whitcroft <[email protected]>
> > Cc: Daniel Vetter <[email protected]>
> > Reviewed-by: Daniel Vetter <[email protected]>
> > [Note for 2.6.38-stable, we need to reintroduce the interruptible passing]
> 
> What do you mean by this?

As I never got an answer, consider this patch dropped from the
"to-apply" stable queue :(

greg k-h

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