[PATCH v19 11/15] IB/mlx4: untag user pointers in mlx4_get_umem_mr

Jason Gunthorpe jgg at ziepe.ca
Wed Jul 24 19:25:04 UTC 2019

On Tue, Jul 23, 2019 at 07:58:48PM +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.
> Reviewed-by: Jason Gunthorpe <jgg at mellanox.com>
> Acked-by: Catalin Marinas <catalin.marinas at arm.com>
> Reviewed-by: Kees Cook <keescook at chromium.org>
> Signed-off-by: Andrey Konovalov <andreyknvl at google.com>
> ---
>  drivers/infiniband/hw/mlx4/mr.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)

Applied to rdma-for next, please don't sent it via other trees :)


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