On Tue, Oct 4, 2011 at 9:42 AM, James Simmons <jsimmons@xxxxxxxxxxxxx> wrote: > >> > Thats fine as long as you don't want to do acceleration or object >> > migration between GTT >> > and VRAM type memory. Now I expect when you give out this advice you >> >> Yes but the VIA doesn't if I recall correctly have any 'VRAM type memory'. >> It's all effectively in the GART with the 'stolen' pages preloaded into >> the translation tables by the BIOS at vga init time. >> >> It has fake VRAM type memory but thats really an illusion (although one >> the driver seems to like to keep up). The GEM changes do mean you can >> plug the existing allocator in the VIA driver into GEM directly. Whether >> that would be a good idea or not given the other things you then need to >> do I don't know - but it does seem to be me to be a stepping stone in the >> right direction that is much easier to make ? > > That is correct. In fact the via driver detects what type of system ram is > used so I can limit what resolutions are supported. Its possible that the > memory doesn't have the bandwidth to support a very large resolution on > older systems. Is vram actually handled via a scatter/gather page table or is it just a pointer to a contiguous chunk of stolen system memory at the top of ram? Alex _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
