From: Jason Gunthorpe <jgg@nvidia.com>
To: Logan Gunthorpe <logang@deltatee.com>
Cc: Matthew Wilcox <willy@infradead.org>,
linux-kernel@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
Joao Martins <joao.m.martins@oracle.com>,
John Hubbard <jhubbard@nvidia.com>,
Ming Lei <ming.lei@redhat.com>,
linux-block@vger.kernel.org, netdev@vger.kernel.org,
linux-mm@kvack.org, linux-rdma@vger.kernel.org,
dri-devel@lists.freedesktop.org, nvdimm@lists.linux.dev
Subject: Re: Phyr Starter
Date: Tue, 11 Jan 2022 18:57:13 -0400 [thread overview]
Message-ID: <20220111225713.GS2328285@nvidia.com> (raw)
In-Reply-To: <ef01ce7d-f1d3-0bbb-38ba-2de4d3f7e31a@deltatee.com>
On Tue, Jan 11, 2022 at 03:09:13PM -0700, Logan Gunthorpe wrote:
> Either that, or we need a wrapper that allocates an appropriately
> sized SGL to pass to any dma_map implementation that doesn't support
> the new structures.
This is what I think we should do. If we start with RDMA then we can
motivate the 4 main server IOMMU drivers to get updated ASAP, then it
can acceptably start to spread to other users.
The passthrough path would have to be optimized from the start to
avoid the SGL.
Jason
next prev parent reply other threads:[~2022-01-11 22:57 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-10 19:34 Phyr Starter Matthew Wilcox
2022-01-11 0:41 ` Jason Gunthorpe
2022-01-11 4:32 ` Matthew Wilcox
2022-01-11 15:01 ` Jason Gunthorpe
2022-01-11 18:33 ` Matthew Wilcox
2022-01-11 20:21 ` Jason Gunthorpe
2022-01-11 21:25 ` Matthew Wilcox
2022-01-11 22:09 ` Logan Gunthorpe
2022-01-11 22:57 ` Jason Gunthorpe [this message]
2022-01-11 23:02 ` Logan Gunthorpe
2022-01-11 22:53 ` Jason Gunthorpe
2022-01-11 22:57 ` Logan Gunthorpe
2022-01-11 23:02 ` Jason Gunthorpe
2022-01-11 23:08 ` Logan Gunthorpe
2022-01-12 18:37 ` Matthew Wilcox
2022-01-12 19:08 ` Jason Gunthorpe
2022-01-20 14:03 ` Christoph Hellwig
2022-01-20 17:17 ` Jason Gunthorpe
2022-01-20 14:00 ` Christoph Hellwig
2022-01-11 9:05 ` Daniel Vetter
2022-01-11 20:26 ` Jason Gunthorpe
2022-01-20 14:09 ` Christoph Hellwig
2022-01-20 13:56 ` Christoph Hellwig
2022-01-20 15:27 ` Keith Busch
2022-01-20 15:28 ` Christoph Hellwig
2022-01-20 17:54 ` Robin Murphy
2022-01-11 8:17 ` John Hubbard
2022-01-11 14:01 ` Matthew Wilcox
2022-01-11 15:02 ` Jason Gunthorpe
2022-01-11 17:31 ` Logan Gunthorpe
2022-01-20 14:12 ` Christoph Hellwig
2022-01-20 21:35 ` John Hubbard
2022-01-11 11:40 ` Thomas Zimmermann
2022-01-11 13:56 ` Matthew Wilcox
2022-01-11 14:10 ` Thomas Zimmermann
2022-01-20 13:39 ` Christoph Hellwig
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