From: logang@deltatee.com (Logan Gunthorpe)
Subject: [PATCH 06/12] IB/core: Add optional PCI P2P flag to rdma_rw_ctx_[init|destroy]()
Date: Mon, 8 Jan 2018 12:05:57 -0700 [thread overview]
Message-ID: <7d276107-d2ae-530b-3d56-e104e22b4eea@deltatee.com> (raw)
In-Reply-To: <20180108185743.GA15936@lst.de>
On 08/01/18 11:57 AM, Christoph Hellwig wrote:
> It does, sort of - but in a different way then the normal DMA map
> ops. And only to work around the fact that we need to map our
> P2P space into struct pages. Without that we could just pass the
> bus address around, but the Linux stack and VM isn't anywhere near
> ready for something that advanced.
Yeah, wouldn't that be nice.
Ok, so if we shouldn't touch the dma_map infrastructure how should the
workaround to opt-out HFI and QIB look? I'm not that familiar with the
RDMA code.
Thanks,
Logan
next prev parent reply other threads:[~2018-01-08 19:05 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-04 19:01 [PATCH 00/11] Copy Offload in NVMe Fabrics with P2P PCI Memory Logan Gunthorpe
2018-01-04 19:01 ` [PATCH 01/12] pci-p2p: Support peer to peer memory Logan Gunthorpe
2018-01-04 21:40 ` Bjorn Helgaas
2018-01-04 23:06 ` Logan Gunthorpe
2018-01-04 21:59 ` Bjorn Helgaas
2018-01-05 0:20 ` Logan Gunthorpe
2018-01-04 19:01 ` [PATCH 02/12] pci-p2p: Add sysfs group to display p2pmem stats Logan Gunthorpe
2018-01-04 21:50 ` Bjorn Helgaas
2018-01-04 22:25 ` Jason Gunthorpe
2018-01-04 23:13 ` Logan Gunthorpe
2018-01-04 19:01 ` [PATCH 03/12] pci-p2p: Add PCI p2pmem dma mappings to adjust the bus offset Logan Gunthorpe
2018-01-04 19:01 ` [PATCH 04/12] pci-p2p: Clear ACS P2P flags for all client devices Logan Gunthorpe
2018-01-04 21:57 ` Bjorn Helgaas
2018-01-04 22:35 ` Alex Williamson
2018-01-05 0:00 ` Logan Gunthorpe
2018-01-05 1:09 ` Logan Gunthorpe
2018-01-05 3:33 ` Alex Williamson
2018-01-05 6:47 ` Jerome Glisse
2018-01-05 15:41 ` Alex Williamson
2018-01-05 17:10 ` Logan Gunthorpe
2018-01-05 17:18 ` Alex Williamson
2018-01-04 19:01 ` [PATCH 05/12] block: Introduce PCI P2P flags for request and request queue Logan Gunthorpe
2018-01-04 19:01 ` [PATCH 06/12] IB/core: Add optional PCI P2P flag to rdma_rw_ctx_[init|destroy]() Logan Gunthorpe
2018-01-04 19:22 ` Jason Gunthorpe
2018-01-04 19:52 ` Logan Gunthorpe
2018-01-04 22:13 ` Jason Gunthorpe
2018-01-04 23:44 ` Logan Gunthorpe
2018-01-05 4:50 ` Jason Gunthorpe
2018-01-08 14:59 ` Christoph Hellwig
2018-01-08 18:09 ` Jason Gunthorpe
2018-01-08 18:17 ` Logan Gunthorpe
2018-01-08 18:29 ` Jason Gunthorpe
2018-01-08 18:34 ` Christoph Hellwig
2018-01-08 18:44 ` Logan Gunthorpe
2018-01-08 18:57 ` Christoph Hellwig
2018-01-08 19:05 ` Logan Gunthorpe [this message]
2018-01-09 16:47 ` Christoph Hellwig
2018-01-08 19:49 ` Jason Gunthorpe
2018-01-09 16:46 ` Christoph Hellwig
2018-01-09 17:10 ` Jason Gunthorpe
2018-01-08 19:01 ` Jason Gunthorpe
2018-01-09 16:55 ` Christoph Hellwig
2018-01-04 19:01 ` [PATCH 07/12] nvme-pci: clean up CMB initialization Logan Gunthorpe
2018-01-04 19:08 ` Logan Gunthorpe
2018-01-04 19:01 ` [PATCH 08/12] nvme-pci: clean up SMBSZ bit definitions Logan Gunthorpe
2018-01-04 19:08 ` Logan Gunthorpe
2018-01-04 19:01 ` [PATCH 09/12] nvme-pci: Use PCI p2pmem subsystem to manage the CMB Logan Gunthorpe
2018-01-05 15:30 ` Marta Rybczynska
2018-01-05 18:14 ` Logan Gunthorpe
2018-01-05 18:11 ` Keith Busch
2018-01-05 18:19 ` Logan Gunthorpe
2018-01-05 19:01 ` Keith Busch
2018-01-05 19:04 ` Logan Gunthorpe
2018-01-04 19:01 ` [PATCH 10/12] nvme-pci: Add support for P2P memory in requests Logan Gunthorpe
2018-01-04 19:01 ` [PATCH 11/12] nvme-pci: Add a quirk for a pseudo CMB Logan Gunthorpe
2018-01-04 19:01 ` [PATCH 12/12] nvmet: Optionally use PCI P2P memory Logan Gunthorpe
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