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Date:   Mon, 24 Jun 2019 18:40:15 +0100
From:   Catalin Marinas <catalin.marinas@arm.com>
To:     Andrey Konovalov <andreyknvl@google.com>
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Subject: Re: [PATCH v18 11/15] IB/mlx4: untag user pointers in
 mlx4_get_umem_mr
Message-ID: <20190624174015.GL29120@arrakis.emea.arm.com>
References: <cover.1561386715.git.andreyknvl@google.com>
 <ea0ff94ef2b8af12ea6c222c5ebd970e0849b6dd.1561386715.git.andreyknvl@google.com>
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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