From: Keith Busch <keith.busch@linux.intel.com>
To: Logan Gunthorpe <logang@deltatee.com>
Cc: "Jens Axboe" <axboe@kernel.dk>,
linux-nvdimm@lists.01.org, linux-rdma@vger.kernel.org,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-nvme@lists.infradead.org, "Christoph Hellwig" <hch@lst.de>,
linux-block@vger.kernel.org,
"Alex Williamson" <alex.williamson@redhat.com>,
"Jason Gunthorpe" <jgg@mellanox.com>,
"Jérôme Glisse" <jglisse@redhat.com>,
"Benjamin Herrenschmidt" <benh@kernel.crashing.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Max Gurtovoy" <maxg@mellanox.com>,
"Christian König" <christian.koenig@amd.com>
Subject: Re: [PATCH v8 10/13] nvme-pci: Add support for P2P memory in requests
Date: Thu, 27 Sep 2018 11:10:38 -0600 [thread overview]
Message-ID: <20180927171038.GD19589@localhost.localdomain> (raw)
In-Reply-To: <20180927165420.5290-11-logang@deltatee.com>
On Thu, Sep 27, 2018 at 10:54:17AM -0600, Logan Gunthorpe wrote:
> For P2P requests, we must use the pci_p2pmem_map_sg() function
> instead of the dma_map_sg functions.
>
> With that, we can then indicate PCI_P2P support in the request queue.
> For this, we create an NVME_F_PCI_P2P flag which tells the core to
> set QUEUE_FLAG_PCI_P2P in the request queue.
>
> Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
> Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
> Reviewed-by: Christoph Hellwig <hch@lst.de>
Looks good to me as well.
Reviewed-by: Keith Busch <keith.busch@intel.com>
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next prev parent reply other threads:[~2018-09-27 17:08 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-27 16:54 [PATCH v8 00/13] Copy Offload in NVMe Fabrics with P2P PCI Memory Logan Gunthorpe
2018-09-27 16:54 ` [PATCH v8 01/13] PCI/P2PDMA: Support peer-to-peer memory Logan Gunthorpe
2018-09-27 16:54 ` [PATCH v8 02/13] PCI/P2PDMA: Add sysfs group to display p2pmem stats Logan Gunthorpe
2018-09-27 16:54 ` [PATCH v8 03/13] PCI/P2PDMA: Add PCI p2pmem DMA mappings to adjust the bus offset Logan Gunthorpe
2018-09-27 16:54 ` [PATCH v8 04/13] PCI/P2PDMA: Introduce configfs/sysfs enable attribute helpers Logan Gunthorpe
2018-09-27 16:54 ` [PATCH v8 05/13] docs-rst: Add a new directory for PCI documentation Logan Gunthorpe
2018-09-27 16:54 ` [PATCH v8 06/13] PCI/P2PDMA: Add P2P DMA driver writer's documentation Logan Gunthorpe
2018-09-27 16:54 ` [PATCH v8 07/13] block: Add PCI P2P flag for request queue and check support for requests Logan Gunthorpe
2018-09-27 16:54 ` [PATCH v8 08/13] IB/core: Ensure we map P2P memory correctly in rdma_rw_ctx_[init|destroy]() Logan Gunthorpe
2018-09-27 16:54 ` [PATCH v8 09/13] nvme-pci: Use PCI p2pmem subsystem to manage the CMB Logan Gunthorpe
2018-09-27 17:10 ` Keith Busch
2018-09-27 16:54 ` [PATCH v8 10/13] nvme-pci: Add support for P2P memory in requests Logan Gunthorpe
2018-09-27 17:10 ` Keith Busch [this message]
2018-09-27 16:54 ` [PATCH v8 11/13] nvme-pci: Add a quirk for a pseudo CMB Logan Gunthorpe
2018-09-27 17:09 ` Keith Busch
2018-09-27 16:54 ` [PATCH v8 12/13] nvmet: Introduce helper functions to allocate and free request SGLs Logan Gunthorpe
2018-09-27 16:54 ` [PATCH v8 13/13] nvmet: Optionally use PCI P2P memory Logan Gunthorpe
2018-09-27 17:12 ` Keith Busch
2018-09-27 17:29 ` Logan Gunthorpe
2018-10-01 21:34 ` Sagi Grimberg
2018-10-01 21:55 ` Logan Gunthorpe
2018-10-01 22:23 ` Sagi Grimberg
2018-10-01 23:43 ` Logan Gunthorpe
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