From: Jason Gunthorpe <jgg@ziepe.ca>
To: Leon Romanovsky <leon@kernel.org>
Cc: Doug Ledford <dledford@redhat.com>,
Michael Guralnik <michaelgur@mellanox.com>,
RDMA mailing list <linux-rdma@vger.kernel.org>,
Leon Romanovsky <leonro@mellanox.com>
Subject: Re: [PATCH rdma-next] RDMA/core: Add weak ordering dma attr to dma mapping
Date: Thu, 13 Feb 2020 15:20:26 -0400 [thread overview]
Message-ID: <20200213192026.GA10377@ziepe.ca> (raw)
In-Reply-To: <20200212073559.684139-1-leon@kernel.org>
On Wed, Feb 12, 2020 at 09:35:59AM +0200, Leon Romanovsky wrote:
> From: Michael Guralnik <michaelgur@mellanox.com>
>
> For memory regions registered with IB_ACCESS_RELAXED_ORDERING will be
> dma mapped with the DMA_ATTR_WEAK_ORDERING.
>
> This will allow reads and writes to the mapping to be weakly ordered,
> such change can enhance performance on some supporting architectures.
>
> Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
> ---
> drivers/infiniband/core/umem.c | 11 +++++++----
> 1 file changed, 7 insertions(+), 4 deletions(-)
Applied to for-next
Thanks,
Jason
prev parent reply other threads:[~2020-02-13 19:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-12 7:35 [PATCH rdma-next] RDMA/core: Add weak ordering dma attr to dma mapping Leon Romanovsky
2020-02-13 19:20 ` Jason Gunthorpe [this message]
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