Re: [PATCH] drm/i915/userptr: detect un-GUP-able pages early

On 1/15/21 5:07 PM, Chris Wilson wrote: > 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 dri

Re: [PATCH] drm/i915/userptr: detect un-GUP-able pages early

On 1/15/21 4:56 PM, Chris Wilson wrote: > 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 ma

[PATCH] drm/i915/userptr: detect un-GUP-able pages early

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. This not only disables graphics acceleration but may also cripple other f