accel/habanalabs: export dma-buf only if size/offset multiples of PAGE_SIZE

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It is currently allowed for a user to export dma-buf with size and
offset that are not multiples of PAGE_SIZE.
The exported memory is mapped for the importer device, and there it will
be rounded to PAGE_SIZE, leading to actually exporting more than the
user intended to.
To make the user be aware of it, accept only size and offset which are
multiple of PAGE_SIZE.

Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

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Tomer Tayar 2023-08-09 16:14:49 +03:00 • committed by Oded Gabbay

parent efbca048c6

commit 0b75cb5b24

1 changed files with 11 additions and 4 deletions

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drivers/accel/habanalabs/common/memory.c

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