linux-kernel - Re: [PATCH] RDMA/mlx5: return the EFAULT per ibv_advise

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Message-ID: <YQaFM8OTlmde+ZFV@unreal>
Date:   Sun, 1 Aug 2021 14:27:47 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Li Zhijian <lizhijian@...fujitsu.com>
Cc:     dledford@...hat.com, jgg@...pe.ca, linux-rdma@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] RDMA/mlx5: return the EFAULT per ibv_advise_mr(3)

On Sun, Aug 01, 2021 at 05:20:50PM +0800, Li Zhijian wrote:
> ibv_advise_mr(3) says:
> EFAULT In one of the following: o When the range requested is out of the  MR  bounds,
>        or  when  parts of it are not part of the process address space. o One of the
>        lkeys provided in the scatter gather list is invalid or with wrong write access
> 
> Actually get_prefetchable_mr() will return NULL if it see above conditions
> 
> Signed-off-by: Li Zhijian <lizhijian@...fujitsu.com>
> ---
>  drivers/infiniband/hw/mlx5/odp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 

Thanks,
Reviewed-by: Leon Romanovsky <leonro@...dia.com>