[Bug 28402] random radeon/kms/drm related freezes with kernel 2.6.34

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=28402

--- Comment #80 from Da Fox <da_fox at mad.scientist.com> 2010-10-15 05:05:52 PDT ---
(In reply to comment #79)
> Created an attachment (id=39455)
 View: https://bugs.freedesktop.org/attachment.cgi?id=39455
 Review: https://bugs.freedesktop.org/review?bug=28402&attachment=39455

> Make sure gtt and vram are not directly adjacent
> 
> Does this patch fix the issue?

It should, since it simply puts vram at 0 when it is detected that
gtt and vram are adjacent. dmesg says:
---8<---------
radeon 0000:01:00.0: GTT: 256M 0xD0000000 - 0xDFFFFFFF
radeon 0000:01:00.0: VRAM: 64M 0x00000000 - 0x03FFFFFF (64M used)
--->8---------
so it has moved vram to 0. I'll test it just the same though :)
One thing I am wondering is if it is possible to get vram/gtt overlapping with
this, since this patch doesn't seem to perform any further checks to ensure
this when moving either vram or gtt to 0? Presumable this already handled
elsewhere?

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