diff options
| author | Farah Kassabri <fkassabri@habana.ai> | 2023-11-02 12:53:29 +0300 |
|---|---|---|
| committer | Oded Gabbay <ogabbay@kernel.org> | 2024-02-26 10:30:40 +0300 |
| commit | f728c17fc97aea7a33151d9ba64106291c62bb02 (patch) | |
| tree | ef840d707bbfa0b3c8135eb6efda8e890fd2cd75 /drivers/accel/habanalabs/gaudi | |
| parent | 246d8b6cfb80a31e3cc287e3c1db6a5515b7c20a (diff) | |
| download | linux-f728c17fc97aea7a33151d9ba64106291c62bb02.tar.xz | |
accel/habanalabs/gaudi2: move HMMU page tables to device memory
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>
Diffstat (limited to 'drivers/accel/habanalabs/gaudi')
| -rw-r--r-- | drivers/accel/habanalabs/gaudi/gaudi.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/accel/habanalabs/gaudi/gaudi.c b/drivers/accel/habanalabs/gaudi/gaudi.c index 53292d4c15c8..dde3839fe0e0 100644 --- a/drivers/accel/habanalabs/gaudi/gaudi.c +++ b/drivers/accel/habanalabs/gaudi/gaudi.c @@ -649,6 +649,7 @@ static int gaudi_set_fixed_properties(struct hl_device *hdev) prop->dmmu.start_addr = (VA_HOST_SPACE_START + VA_HOST_SPACE_SIZE / 2); prop->dmmu.end_addr = VA_HOST_SPACE_END; prop->dmmu.page_size = PAGE_SIZE_2MB; + prop->dmmu.pgt_size = prop->mmu_pgt_size; prop->cfg_size = CFG_SIZE; prop->max_asid = MAX_ASID; |