Chris Wilson writes:
> Be consistent, and even when we know we had used a WC, flush the mapped
> object after writing into it. The flush understands the mapping type and
> will only clflush if !I915_MAP_WC, but will always insert a wmb [sfence]
> so that we can be sure that all writes are visible
Be consistent, and even when we know we had used a WC, flush the mapped
object after writing into it. The flush understands the mapping type and
will only clflush if !I915_MAP_WC, but will always insert a wmb [sfence]
so that we can be sure that all writes are visible.
v2: Add the unconditional wm
