I'm not quite sure if this can be called a regression, since radeon KMS
is still in staging as far as I know, but it was working quite well for
me up until about -rc3, and now it causes a panic on every boot.  If I
pass radeon.modeset=0 on the command line, everything works.

I took a picture of the crash details:

http://picasaweb.google.ca/kjwinchester/LinuxKernelPanic#5432580230065271634

I was hoping that the last pull of DRM fixes would correct the issue,
but unfortunately they had no effect.

In case it helps, here is the gdb listing for the problem address:

(gdb) l *(radeon_agp_init+0x1d)
0xffffffff811c1592 is in radeon_agp_init 
(drivers/gpu/drm/radeon/radeon_agp.c:136).
131             uint32_t agp_status;
132             int default_mode;
133             bool is_v3;
134             int ret;
135     
136             if (rdev->ddev->agp->agp_info.aper_size < 32) {
137                     dev_warn(rdev->dev, "AGP aperture to small (%dM) "
138                             "need at least 32M, disabling AGP\n",
139                             rdev->ddev->agp->agp_info.aper_size);
140                     return -EINVAL;

Is there any other info I can provide?

Thanks,

-- 
Kevin Winchester



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