From: Tomer Tayar <tta...@habana.ai>
For Gaudi1 the exported dma-buf is always composed of a single page, and
therefore the exported size is equal to this page's size.
When calling alloc_sgt_from_device_pages(), we pass 0 as the exported
size and internally calculate it as "number of pages * page size".
This makes alloc_sgt_from_device_pages() less clear, because the
exported size parameter is not understood as a restriction on the pages'
size.
Modify to always pass the exported size explicitly.
Signed-off-by: Tomer Tayar <tta...@habana.ai>
Reviewed-by: Oded Gabbay <ogab...@kernel.org>
Signed-off-by: Oded Gabbay <ogab...@kernel.org>
---
drivers/accel/habanalabs/common/memory.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/accel/habanalabs/common/memory.c
b/drivers/accel/habanalabs/common/memory.c
index 1b1b4256b011..c7e49cb383cf 100644
--- a/drivers/accel/habanalabs/common/memory.c
+++ b/drivers/accel/habanalabs/common/memory.c
@@ -1561,8 +1561,7 @@ static struct sg_table
*alloc_sgt_from_device_pages(struct hl_device *hdev, u64
if (!sgt)
return ERR_PTR(-ENOMEM);
- /* remove export size restrictions in case not explicitly defined */
- cur_size_to_export = exported_size ? exported_size : (npages *
page_size);
+ cur_size_to_export = exported_size;
/* If the size of each page is larger than the dma max segment size,
* then we can't combine pages and the number of entries in the SGL
@@ -1728,7 +1727,7 @@ static struct sg_table *hl_map_dmabuf(struct
dma_buf_attachment *attachment,
&hl_dmabuf->device_address,
1,
hl_dmabuf->dmabuf->size,
- 0,
+ hl_dmabuf->dmabuf->size,
attachment->dev,
dir);
--
2.34.1
