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

[Roland Scheidegger]

Andreas Haumer wrote:
> I'm testing the patch on three different ATI based graphic hardware 
> for a couple of days now and for me the patch works fine. This patch
>  is even the only way to let Xorg 6.9.0 run on this hardware, as the
>  original radeon driver (without the patch) seems to be very unstable
>  (X server freezes in a couple of minutes)
On which system doesn't it run without the patch? All three?

> I do not see any strange effects with the mouse cursor or icons. 
> Switching between text and graphics mode as well as between different
>  X11 sessions works. Watching videos (using xine) works fine, too.
This is very different to xawtv overlay. xawtv grabdisplay which is
comparable works too here even with the patch.

> I do not use DRI though, as I get kernel panics (oops) when 
> activating the dri module (this is not radeon specific as I get DRI 
> related kernel panics with other graphic drivers too)
That's a very big difference - not using dri is almost like using a
different driver. Not sure how you can stand that though, for me it
always feels a bit too sluggish. You shouldn't get kernel panics when
using DRI though obviously (on all 3 systems?).
Your hardware is interesting though and all of them quite different to
mine (your r100-derived chip is an igp, the igp9100 and M10 are quite
different beasts too).

> glxgears gives me about 223 FPS
glxgears scores aren't all that interesting anyway, but without dri they
are only measuring cpu performance :-).

Because I was curious I tried without dri too, and the results were even 
worse. It didn't crash, but I couldn't see enough to even log in with 
kdm, instead I could see fragments of the previous X session, though 
they were "noisy" - obviously a result of having powered off for some 
seconds the pc after switching drivers/changing xorg config...
So it's not only drm interaction which causes this to not work here.

Roland