Radeon mem map fix (#2): Need regression tests please

[Benjamin Herrenschmidt]

> It seems like the patch causes some regressions. I added them to my 
> unofficial gentoo xorg ebuild used by some people on the gentoo forums 
> and got these responses:
> 
> "emerged rc4, now I have garbage in place of mouse cursor graphics and 
> garbage in firefox 1.5
> and yes, I have radeon mobility..."
> 
> "No, I had the same problem with my Radeon 7000 which worked fine before 
> this latest bump. In addition to the cursor thing it actually 
> hard-locked the machine after a few mins of X use but worked fine in 
> console-login mode."
> 
> Disabling the patch fixed the issues in both cases. I told them to 
> recompile with debug and send in their logs. I don't have any radeons 
> myself to test with.

Ok, I do need those logs. I suspect it's a problem with the cursor
offset.

Ben.