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

[Andrey Konovalov]

On Wed, Jul 24, 2019 at 9:25 PM Jason Gunthorpe <jgg@xxxxxxxx> wrote:
>
> 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@xxxxxxxxxxxx>
> > Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>
> > Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>
> > Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
> > ---
> >  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 :)

Sure, thanks!

>
> Thanks,
> Jason