mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2025-01-08 14:54:23 +08:00
b7a0e75632
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 |
||
|---|---|---|
| .. | ||
| habanalabs | ||
| ivpu | ||
| qaic | ||
| drm_accel.c | ||
| Kconfig | ||
| Makefile | ||