[Intel-gfx] regression after: drm/i915: Warn if we run out of FIFO space for a mode

[Alexey Fisher]

On Di, 2010-08-03 at 17:15 +0200, Alexey Fisher wrote:
> On Mo, 2010-08-02 at 20:42 +0100, Chris Wilson wrote:
> > On Mon, 02 Aug 2010 12:16:16 +0200, Alexey Fisher <bug-track at fisher-privat.net> wrote:
> > > Hallo all,
> > > i have regression coused by this patch:
> > > 
> > > commit b9421ae8f30958deea98d71477b4a77a066856b4
> > > Author: Chris Wilson <chris at chris-wilson.co.uk>
> > > Date: Mon Jul 19 21:46:08 2010 +0100
> > > 
> > > drm/i915: Warn if we run out of FIFO space for a mode
> > 
> > Weird as all that patch should do is add a DRM_ERROR() with no other
> > side-effect. How confident are you in your analysis? Did you at least see
> > the error in dmesg?
> 
> No error in dmesg, i doing recheck now. It seems to have some false
> negative. To be sure i run noncrash kernel extra long.

I still can't get good results. Too many false negatives. If you have
some tips, bench tools or test where i can reproduce this bug, it will
be great.

Regards,
	Alexey