[Bug 108894] [anv] vkCmdCopyBuffer() and vkCmdCopyQueryPoolResults() write-after-write hazard

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108894

--- Comment #3 from Lionel Landwerlin <lionel.g.landwerlin at linux.intel.com> ---
Got it.

Yes, I think you need to put barriers because in Anv we're using the 3d
pipeline to copy buffers, whereas timestamps are copied using the command
streamer.
Those being 2 different pieces of hardware, there is no guarantee about which
one is going to write to memory first/last.

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