On Wed, Oct 10, 2012 at 11:37:36PM +0100, Chris Wilson wrote: > On Wed, 10 Oct 2012 23:14:01 +0200, Daniel Vetter <daniel.vetter at ffwll.ch> wrote: > > It doesn't work since the gtt pte range sits in the middle of the mmio > > bar. We didn't notice that since both my and Chris' gen2 machines > > don't support PAT and hence all wc io mapping request will > > automatically be demoted to uc. > > > > This regression has been introduce in > > > > commit edef7e685da05c13cce50c0126189c80fe2c8f71 > > Author: Chris Wilson <chris at chris-wilson.co.uk> > > Date: Fri Sep 14 11:57:47 2012 +0100 > > > > agp/intel: Use a write-combining map for updating PTEs > > > > Reported-by: Egbert Eich <eich at pdx.freedesktop.org> > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=55834 > > Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch> > > Thanks for the explanation, > Acked-by: Chris Wilson <chris at chris-wilson.co.uk> Patch merged to -fixes. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch
