[Bug 108722] gem_exec_flush stress tests fail on APL(Celeron) Platform

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108722

--- Comment #12 from Tapani Pälli <lemody at gmail.com> ---
(In reply to Chris Wilson from comment #11)
> The before- tests are meant to fail. Userspace is leaving the caches
> polluted and not performing any domain changes (no clflushes) prior to
> access. Their only purpose was to prove that we cannot apply this
> optimisation in the kernel and userspace must also be wary of not falling
> into the same trap.

Thanks for the explanation. Uhh .. this means we are likely missing a flush
somewhere within anv driver or client is not properly calling
vkFlushMappedMemoryRanges, vkInvalidateMappedMemoryRanges.

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