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From: Logan Gunthorpe <logang@deltatee.com>
To: Sagi Grimberg <sagi@grimberg.me>,
	linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
	linux-nvme@lists.infradead.org, linux-rdma@vger.kernel.org,
	linux-nvdimm@lists.01.org, linux-block@vger.kernel.org
Cc: "Jens Axboe" <axboe@kernel.dk>,
	"Christian König" <christian.koenig@amd.com>,
	"Benjamin Herrenschmidt" <benh@kernel.crashing.org>,
	"Steve Wise" <swise@opengridcomputing.com>,
	"Alex Williamson" <alex.williamson@redhat.com>,
	"Jérôme Glisse" <jglisse@redhat.com>,
	"Jason Gunthorpe" <jgg@mellanox.com>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Max Gurtovoy" <maxg@mellanox.com>,
	"Christoph Hellwig" <hch@lst.de>
Subject: Re: [PATCH v8 13/13] nvmet: Optionally use PCI P2P memory
Date: Mon, 1 Oct 2018 17:43:00 -0600	[thread overview]
Message-ID: <587bb6bd-ec07-62ac-6442-cbc7892df37f@deltatee.com> (raw)
In-Reply-To: <b790b11f-41df-f495-fdd1-d8bd6d6b7dd6@grimberg.me>



On 01/10/18 04:23 PM, Sagi Grimberg wrote:
>> I did not realize the namespace would be available at this time. I guess
>> I can give this a try, but it's going to be a fairly big change from
>> what's presented here... Though, I agree it'll probably be an
>> improvement.
> 
> Thanks, if it turns out to create to much of a churn, we could defer
> that to a later stage, but we can at least document it.

Yeah, it's going to create a bunch of churn, but it's probably worth
doing before merging because I think it will remove a bunch of
complexity (ie. the need for the whole p2p client infrastructure because
we now only need to worry about only one namespace at a time, instead of
needing to find a p2p device that works with all namespaces at once).

I'll try to get a v9 with this change published in the next day or two.

Logan
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      reply	other threads:[~2018-10-01 23:43 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
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 [this message]

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