Re: [PATCH v18 11/15] IB/mlx4: untag user pointers in mlx4_get_umem_mr

Catalin Marinas
2019-06-24T17:40:15Z

On Mon, Jun 24, 2019 at 04:32:56PM +0200, Andrey Konovalov wrote:
> This patch is a part of a series that extends kernel ABI to allow to pass
> tagged user pointers (with the top byte set to something else other than
> 0x00) as syscall arguments.
>
> mlx4_get_umem_mr() uses provided user pointers for vma lookups, which can
> only by done with untagged pointers.
>
> Untag user pointers in this function.
>
> Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
> ---
> drivers/infiniband/hw/mlx4/mr.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)

Acked-by: Catalin Marinas <catalin.marinas@arm.com>

This patch also needs an ack from the infiniband maintainers (Jason).

--
Catalin