On 07/11/16 06:33 PM, Christian König wrote: > Am 07.11.2016 um 10:29 schrieb Michel Dänzer: >> On 07/11/16 06:21 PM, Christian König wrote: >>> From: Christian König <christian.koenig at amd.com> >>> >>> We don't need to use the PCI BAR on APUs. This allows us to access >>> the full VRAM directly without being limited by the BAR size. >>> >>> Signed-off-by: Christian König <christian.koenig at amd.com> >> The series is >> >> Reviewed-by: Michel Dänzer <michel.daenzer at amd.com> >> >> >> We could also drop the HDP flushes / invalidates in this case, right? > Could be, but I'm not 100% sure how those are actually wired up on APUs. > > Might be that they are NOPs anyway, but could be that at least the > flushes are still vital. My assumption is that since CPU access to VRAM doesn't go through the HDP at all with this change, HDP flushes / invalidates can't have any useful effect. -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer
