[Bug 95472] [i915] Feature request: Add support for fencing for PRIME setups

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95472

--- Comment #11 from Mike Lothian <mike at fireburn.co.uk> ---
I've bisected back to:

6e934d43fe55156c68a2e55f1d51f182003b3b0b is the first bad commit
commit 6e934d43fe55156c68a2e55f1d51f182003b3b0b
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Wed Jul 6 14:21:07 2016 +0100

    nonblocking-dispatch

:040000 040000 ee65c1addbef2b6965be4bce69c5af051aa83b07
a72d3da61b145d64f7d8da94c6a0f752f80a8f78 M      drivers

Based on:

git bisect start
# bad: [37dbdf6f78b5e33a3d640a431fc077b358654152] in-out-fence
git bisect bad 37dbdf6f78b5e33a3d640a431fc077b358654152
# good: [eebe64201e8d775c63c034265a3d5f2200ae8070] drm/i915: Micro-optimise
i915_get_ggtt_vma_pages()
git bisect good eebe64201e8d775c63c034265a3d5f2200ae8070
# bad: [a2dd67f066f2cb854ff7978eac273030b45c1e27] drm/i915: Serialise execbuf
operation after a dma-buf reservation object
git bisect bad a2dd67f066f2cb854ff7978eac273030b45c1e27
# good: [28f79ffbce93e805a6cd7d65c1480cb9e84fd3ce] kfence: Extend kfences for
listening on DMA fences
git bisect good 28f79ffbce93e805a6cd7d65c1480cb9e84fd3ce
# bad: [6e934d43fe55156c68a2e55f1d51f182003b3b0b] nonblocking-dispatch
git bisect bad 6e934d43fe55156c68a2e55f1d51f182003b3b0b
# good: [735a36acb474134c42ea48ac4871555999cf4f5f] eb-sync
git bisect good 735a36acb474134c42ea48ac4871555999cf4f5f
# first bad commit: [6e934d43fe55156c68a2e55f1d51f182003b3b0b]
nonblocking-dispatch

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