[Intel-gfx] [PATCH 1/4] drm/i915/selftests: Test vm isolation

[Chris Wilson]

Quoting Chris Wilson (2018-10-29 10:59:23)
> The vm of two contexts are supposed to be independent, such that a stray
> write by one cannot be detected by another. Normally the GTT is filled
> explicitly by userspace, but the space in between objects is filled with
> a scratch page -- and that scratch page should be able to form an
not! should not be able...
> inter-context backchannel.
-Chris