From: Jason Gunthorpe <jgg@nvidia.com>
To: Leon Romanovsky <leon@kernel.org>
Cc: Doug Ledford <dledford@redhat.com>,
Mark Zhang <markzhang@nvidia.com>,
linux-rdma@vger.kernel.org
Subject: Re: [PATCH rdma-rc] RDMA/mlx5: Use different doorbell memory for different processes
Date: Thu, 3 Jun 2021 14:39:01 -0300 [thread overview]
Message-ID: <20210603173901.GA303986@nvidia.com> (raw)
In-Reply-To: <feacc23fe0bc6e1088c6824d5583798745e72405.1622726212.git.leonro@nvidia.com>
On Thu, Jun 03, 2021 at 04:18:03PM +0300, Leon Romanovsky wrote:
> From: Mark Zhang <markzhang@nvidia.com>
>
> In fork scenario, the parent and child can have same virtual address.
> That causes to the list_for_each_entry search return same doorbell location
> for all processes.
>
> This patch takes the mm_struct into consideration during search, to make
> sure that different doorbell memory is used for the different processes.
>
> Fixes: e126ba97dba9 ("mlx5: Add driver for Mellanox Connect-IB adapters")
> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
> Signed-off-by: Mark Zhang <markzhang@nvidia.com>
> Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
> ---
> drivers/infiniband/hw/mlx5/doorbell.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
Applied to for-rc, thanks
Jason
prev parent reply other threads:[~2021-06-03 17:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-03 13:18 [PATCH rdma-rc] RDMA/mlx5: Use different doorbell memory for different processes Leon Romanovsky
2021-06-03 17:39 ` Jason Gunthorpe [this message]
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