Quoting Chris Wilson (2021-01-15 16:56:42) > Quoting Jinoh Kang (2021-01-15 16:23:31) > > If GUP-ineligible pages are passed to a GEM userptr object, -EFAULT is > > returned only when the object is actually bound. > > > > The xf86-video-intel userspace driver cannot differentiate this > > condition, and marks the GPU as wedged. > > The idea was to call gem_set_domain on the object to validate the pages > after creation. I only did that for read-only... I did however make mesa > use set-domain for validation.
Hmm, I remember a reason why we wanted to be lazy in populating the pages was that we would often be called to create a map that was never used. So the additional gup + bind was measurable, and we would rather just have a probe. -Chris _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
