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| author | Tomer Tayar <ttayar@habana.ai> | 2023-08-04 17:42:13 +0300 |
|---|---|---|
| committer | Oded Gabbay <ogabbay@kernel.org> | 2023-10-09 12:37:21 +0300 |
| commit | efbca048c64bb00562c3e980dfc6ca47fff4fa0e (patch) | |
| tree | 2c8998b3d9edd98560059506bb94e27718a9b7e7 /drivers/accel | |
| parent | dfdbc55a9c8c5ab00ae2d5963ac1199fdc9da2d3 (diff) | |
| download | lwn-efbca048c64bb00562c3e980dfc6ca47fff4fa0e.tar.gz lwn-efbca048c64bb00562c3e980dfc6ca47fff4fa0e.zip | |
accel/habanalabs: use exported size from dma_buf and not from phys_pg_pack
The 'exported_size' member in 'struct hl_vm_phys_pg_pack' is used to
keep the exported dma-buf size, to be later used when the buffer is
mapped.
However it is possible that the same phys_pg_pack will be exported more
than once, and independently of when the mapping takes place.
Remove this member from the phys_pg_pack structure, and simply use the
size in the dma-buf object as the exported size when mapping.
Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Diffstat (limited to 'drivers/accel')
| -rw-r--r-- | drivers/accel/habanalabs/common/habanalabs.h | 2 | ||||
| -rw-r--r-- | drivers/accel/habanalabs/common/memory.c | 3 |
2 files changed, 1 insertions, 4 deletions
diff --git a/drivers/accel/habanalabs/common/habanalabs.h b/drivers/accel/habanalabs/common/habanalabs.h index 6f2cbd3c2e95..4c5d55c9109d 100644 --- a/drivers/accel/habanalabs/common/habanalabs.h +++ b/drivers/accel/habanalabs/common/habanalabs.h @@ -2159,7 +2159,6 @@ struct hl_vm_hw_block_list_node { * @pages: the physical page array. * @npages: num physical pages in the pack. * @total_size: total size of all the pages in this list. - * @exported_size: buffer exported size. * @node: used to attach to deletion list that is used when all the allocations are cleared * at the teardown of the context. * @mapping_cnt: number of shared mappings. @@ -2176,7 +2175,6 @@ struct hl_vm_phys_pg_pack { u64 *pages; u64 npages; u64 total_size; - u64 exported_size; struct list_head node; atomic_t mapping_cnt; u32 asid; diff --git a/drivers/accel/habanalabs/common/memory.c b/drivers/accel/habanalabs/common/memory.c index c7e49cb383cf..27ab176c55c1 100644 --- a/drivers/accel/habanalabs/common/memory.c +++ b/drivers/accel/habanalabs/common/memory.c @@ -1719,7 +1719,7 @@ static struct sg_table *hl_map_dmabuf(struct dma_buf_attachment *attachment, phys_pg_pack->pages, phys_pg_pack->npages, phys_pg_pack->page_size, - phys_pg_pack->exported_size, + hl_dmabuf->dmabuf->size, attachment->dev, dir); else @@ -2044,7 +2044,6 @@ static int export_dmabuf_from_addr(struct hl_ctx *ctx, u64 addr, u64 size, u64 o if (rc) goto dec_memhash_export_cnt; - phys_pg_pack->exported_size = size; hl_dmabuf->phys_pg_pack = phys_pg_pack; hl_dmabuf->memhash_hnode = hnode; } else { |