linux-kernel - Re: [PATCH v2 10/10] nvmet: Optionally use PCI P2P memory

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Message-ID: <6B6A0FD9-14F5-4AF2-A74A-DAA562C34AB9@raithlin.com>
Date:   Thu, 1 Mar 2018 23:53:16 +0000
From:   "Stephen  Bates" <sbates@...thlin.com>
To:     Keith Busch <keith.busch@...el.com>
CC:     Jason Gunthorpe <jgg@...pe.ca>,
        Logan Gunthorpe <logang@...tatee.com>,
        Sagi Grimberg <sagi@...mberg.me>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-nvme@...ts.infradead.org" <linux-nvme@...ts.infradead.org>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        "linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        Christoph Hellwig <hch@....de>, Jens Axboe <axboe@...nel.dk>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Max Gurtovoy <maxg@...lanox.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Jérôme Glisse <jglisse@...hat.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Alex Williamson <alex.williamson@...hat.com>,
        Steve Wise <swise@...ngridcomputing.com>
Subject: Re: [PATCH v2 10/10] nvmet: Optionally use PCI P2P memory

> There's a meaningful difference between writing to an NVMe CMB vs PMR

When the PMR spec becomes public we can discuss how best to integrate it into the P2P framework (if at all) ;-).

Stephen