On Fri, Jun 29, 2012 at 10:49 AM, Michel Dänzer <mic...@daenzer.net> wrote: > On Don, 2012-06-28 at 17:53 -0400, alexdeuc...@gmail.com wrote: >> From: Alex Deucher <alexander.deuc...@amd.com> >> >> Cayman and trinity allow for variable sized VM page >> tables, but SI requires that all page tables be the >> same size. The current code assumes variablely sized >> VM page tables so SI may end up with part of each page >> table overlapping with other memory which could end >> up being interpreted by the VM hw as garbage. >> >> Change the code to better accomodate SI. Allocate enough >> space for at least 2 full page tables and always set >> last_pfn to max_pfn on SI so each VM is backed by a full >> page table. This limits us to only 2 VMs active at any >> given time on SI. This will be rectified and the code can >> be reunified once we move to two level page tables. >> >> Signed-off-by: Alex Deucher <alexander.deuc...@amd.com> > > This change breaks the radeonsi driver for me. egltri_screen (the > 'golden' test for radeonsi at least basically working) locks up the > GPU. > > I don't have any details about the lockup yet, as the GPU reset attempt > hangs the machine. Any ideas offhand what radeonsi might be doing wrong?
Maybe trying to access an unmapped page that happened to work by accident before and now causes a fault in the VM which halts the MC? Alex > > > -- > Earthling Michel Dänzer | http://www.amd.com > Libre software enthusiast | Debian, X and DRI developer _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/dri-devel
