On Fri, May 29, 2015 at 02:15:05PM +0100, Michel Thierry wrote: > We already set this limit for the GGTT. > > This is a temporary patch until a full replacement of size_t variables > (inadequate in 32-bit kernel) is in place. > > Regression from: > commit a4e0bedca678c81eea4cd79a4bd502335639f73a > Author: Michel Thierry <michel.thierry@xxxxxxxxx> > Date: Wed Apr 8 12:13:35 2015 +0100 > > drm/i915: Use complete address space in true PPGTT > > v2: Prettify code and explain why this is needed. (Chris) > v3: Don't hide the compilation warning in 32-bit. (Chris) > > Suggested-by: Daniel Vetter <daniel.vetter@xxxxxxxx> > Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxx> > Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Signed-off-by: Michel Thierry <michel.thierry@xxxxxxxxx> Queued for -next, thanks for the patch. -Daniel > --- > drivers/gpu/drm/i915/i915_gem_gtt.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c > index 17b7df0..619dad1 100644 > --- a/drivers/gpu/drm/i915/i915_gem_gtt.c > +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c > @@ -952,6 +952,13 @@ static int gen8_ppgtt_init(struct i915_hw_ppgtt *ppgtt) > > ppgtt->base.start = 0; > ppgtt->base.total = 1ULL << 32; > + if (IS_ENABLED(CONFIG_X86_32)) > + /* While we have a proliferation of size_t variables > + * we cannot represent the full ppgtt size on 32bit, > + * so limit it to the same size as the GGTT (currently > + * 2GiB). > + */ > + ppgtt->base.total = to_i915(ppgtt->base.dev)->gtt.base.total; > ppgtt->base.cleanup = gen8_ppgtt_cleanup; > ppgtt->base.allocate_va_range = gen8_alloc_va_range; > ppgtt->base.insert_entries = gen8_ppgtt_insert_entries; > -- > 2.4.0 > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > http://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
