From: Jason Gunthorpe <jgg@nvidia.com>
To: Li Zhijian <lizhijian@cn.fujitsu.com>
Cc: leon@kernel.org, dledford@redhat.com, linux-rdma@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] RDMA/mlx5: return the EFAULT per ibv_advise_mr(3)
Date: Tue, 3 Aug 2021 13:25:07 -0300 [thread overview]
Message-ID: <20210803162507.GA2892108@nvidia.com> (raw)
In-Reply-To: <20210801092050.6322-1-lizhijian@cn.fujitsu.com>
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
No, get_prefetchable_mr() returns NULL if the mkey is invalid
The above is talking about the address, which is checked inside
pagefault_mr() and does return EFAULT for all the cases I can see?
Jason
next prev parent reply other threads:[~2021-08-03 16:25 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-01 9:20 [PATCH] RDMA/mlx5: return the EFAULT per ibv_advise_mr(3) Li Zhijian
2021-08-01 11:27 ` Leon Romanovsky
2021-08-03 16:25 ` Jason Gunthorpe [this message]
2021-08-03 17:56 ` Leon Romanovsky
2021-08-03 18:13 ` Jason Gunthorpe
2021-08-04 5:35 ` Leon Romanovsky
2021-08-04 18:50 ` Jason Gunthorpe
2021-08-05 6:43 ` Leon Romanovsky
2021-08-16 2:59 ` lizhijian
2021-08-21 9:44 ` Li, Zhijian
2021-08-25 17:28 ` Jason Gunthorpe
2021-08-26 1:18 ` lizhijian
2021-08-28 8:42 ` Li, Zhijian
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