[Bug 53111] [bisected] lockups since added support for virtual address space on cayman v11

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=53111

--- Comment #27 from Alexandre Demers <alexandre.f.demers at gmail.com> ---
(In reply to comment #21)
> (In reply to comment #20)
> > (In reply to comment #19)
> > > So about this locking piglit test (depthstencil-render-miplevels 146
> > > s=z24_s8_d=z32f_s8), I've been able to track it down to:
> > > line 218:         piglit_report_result(PIGLIT_SKIP);
> > 
> > How did you determine that? It's weird, I wouldn't expect a skipped test to
> > produce any actual GPU rendering.
> 
> I used gdb and step into the code until it locked. It gets out at level 0,
> after going through:
> 
>  /**
>  * Attach the proper miplevel of each texture to the framebuffer
>  */
> void
> set_up_framebuffer_for_miplevel(int level)...
> 
> Before this call, there is a framebuffer initialization:
> 	GLuint fbo;
> 	glGenFramebuffers(1, &fbo);
> 	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
> 	glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo);
> 
> 	for (int level = 0; level <= max_miplevel; ++level) {
> 		set_up_framebuffer_for_miplevel(level);

It seems that with latest mesa, drm, xf86 and kernel 3.7.0-rc7-71633-g3b6b59b
from drm-next, it doesn't fail on this test anymore. It does lock however on a
different one. I'll debug it and see where it locks.

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