Patrik Jakobsson <patrik.r.jakobsson at gmail.com> wrote on 2016/08/30 18:21:08:
> Patrik Jakobsson <patrik.r.jakobsson at gmail.com> > 2016/08/30 18:21 > > From > jiang.biao2 at zte.com.cn, > cc > dri-devel <dri-devel at lists.freedesktop.org> > Re: [PATCH] drm/gma500: remove the process of stolen page in page fault > handler. > > On Tue, Aug 30, 2016 at 7:10 AM, <jiang.biao2 at zte.com.cn> wrote: > > > > Direct gtt range is used in the page fault scene in current driver, > > instead of stolen page. So no need to keep relative process. > > Hi > > Are you saying that we don't use stolen memory? Afaik stolen memory > should be accessed through the stolen range so we do need this. > > -Patrik > As far as I can see, the stolen memory is only used by fbdev driver in gma500, but the fbdev driver maps the stloen memory directly in psbfb_vm_fault, not using psb_gem_fault to map the stolen memory. The only scenario using the psb_gem_fault is the gtt range created by psb_gem_create, which alloc the gtt range without stolen memory backed. If I missed something, pls enlighten me. Thanks a lot.
