On Thu, 2001-11-22 at 11:55, [EMAIL PROTECTED] wrote: > >I suspect it's less stable for us than for the x86 folks though, or > >there would be more noise about it on the various lists. > > > > > >What's this agp_special_page about? > > The agp_special_page is a page of RAM reserved by some code I have > in the kernel's MM init stuff which is as high as possible, that is > outside of the AGP aperture from the card's space (remember we have > the AGP aperture at 0). > > The problem is that UniNorth seem to have a bug preventing writes > from the card to AGP memory to work properly. By putting the ring > read ptr (which is updated by the video chip) in this special page > outside of AGP space, we force the card to use a normal PCI cycle > instead of an AGP cycle to update this pointer.
Did you use it from the start in your AGP implementation? I didn't notice any difference between a couple weeks back and lately. -- Earthling Michel D�nzer (MrCooper)/ Debian GNU/Linux (powerpc) developer XFree86 and DRI project member / CS student, Free Software enthusiast _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
