On 10/7/20 9:44 AM, Daniel Vetter wrote:
These are persistent, not just for the duration of a dma operation.
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Jérôme Glisse <jglisse@xxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: linux-mm@xxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-samsung-soc@xxxxxxxxxxxxxxx
Cc: linux-media@xxxxxxxxxxxxxxx
Cc: Oded Gabbay <oded.gabbay@xxxxxxxxx>
Cc: Omer Shpigelman <oshpigelman@xxxxxxxxx>
Cc: Ofir Bitton <obitton@xxxxxxxxx>
Cc: Tomer Tayar <ttayar@xxxxxxxxx>
Cc: Moti Haimovski <mhaimovski@xxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Pawel Piskorski <ppiskorski@xxxxxxxxx>
---
drivers/misc/habanalabs/common/memory.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/misc/habanalabs/common/memory.c b/drivers/misc/habanalabs/common/memory.c
index ef89cfa2f95a..94bef8faa82a 100644
--- a/drivers/misc/habanalabs/common/memory.c
+++ b/drivers/misc/habanalabs/common/memory.c
@@ -1288,7 +1288,8 @@ static int get_user_memory(struct hl_device *hdev, u64 addr, u64 size,
return -ENOMEM;
}
- rc = pin_user_pages_fast(start, npages, FOLL_FORCE | FOLL_WRITE,
+ rc = pin_user_pages_fast(start, npages,
+ FOLL_FORCE | FOLL_WRITE | FOLL_LONGTERM,
userptr->pages);
if (rc != npages) {
Again, from a pin_user_pages_fast() point of view, and not being at all familiar
with the habana driver (but their use of this really does seem clearly _LONGTERM!):
Reviewed-by: John Hubbard <jhubbard@xxxxxxxxxx>
thanks,
--
John Hubbard
NVIDIA
