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| author | Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com> | 2024-01-15 16:44:32 +0300 |
|---|---|---|
| committer | Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com> | 2024-01-22 12:28:52 +0300 |
| commit | b7a0e75632eb6568c82de9108bd29e130dd082d9 (patch) | |
| tree | 6fb429290e3d552458b56118c69fdab7e4027922 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | a8c099d5d0e4b0400cfddfd95b881c8bd9349a88 (diff) | |
| download | linux-b7a0e75632eb6568c82de9108bd29e130dd082d9.tar.xz | |
accel/ivpu: Disable buffer sharing among VPU contexts
This was not supported properly. A buffer was imported to another VPU
context as a separate buffer object with duplicated sgt.
Both exported and imported buffers could be DMA mapped causing a double
mapping on the same device.
Buffers imported from another VPU context will now just increase
reference count, leaving only a single sgt, fixing the problem above.
Buffers still can't be shared among VPU contexts because each has its
own MMU mapping and ivpu_bo only supports single MMU mappings.
The solution would be to use a mapping list as in panfrost or etnaviv
drivers and it will be implemented in future if required.
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Andrzej Kacprowski <andrzej.kacprowski@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240115134434.493839-8-jacek.lawrynowicz@linux.intel.com
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
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