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accel/habanalabs/gaudi2: move HMMU page tables to device memory

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Currently the HMMU page tables reside in the host memory,
which will cause host access from the device for every page walk.
This can affect PCIe bandwidth in certain scenarios.

To prevent that problem, HMMU page tables will be moved to the device
memory so the miss transaction will read the hops from there instead of
going to the host.

Signed-off-by: Farah Kassabri <fkassabri@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Farah Kassabri 2023-11-02 11:53:29 +02:00 • committed by Oded Gabbay
commit f728c17fc9
10 changed files with 836 additions and 382 deletions
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