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Date:   Fri, 23 Sep 2022 10:16:19 +0200
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Logan Gunthorpe <logang@deltatee.com>
Cc:     linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org,
        linux-block@vger.kernel.org, linux-pci@vger.kernel.org,
        linux-mm@kvack.org, Christoph Hellwig <hch@lst.de>,
        Dan Williams <dan.j.williams@intel.com>,
        Jason Gunthorpe <jgg@ziepe.ca>,
        Christian =?iso-8859-1?Q?K=F6nig?= <christian.koenig@amd.com>,
        John Hubbard <jhubbard@nvidia.com>,
        Don Dutile <ddutile@redhat.com>,
        Matthew Wilcox <willy@infradead.org>,
        Daniel Vetter <daniel.vetter@ffwll.ch>,
        Minturn Dave B <dave.b.minturn@intel.com>,
        Jason Ekstrand <jason@jlekstrand.net>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Xiong Jianxin <jianxin.xiong@intel.com>,
        Bjorn Helgaas <helgaas@kernel.org>,
        Ira Weiny <ira.weiny@intel.com>,
        Robin Murphy <robin.murphy@arm.com>,
        Martin Oliveira <martin.oliveira@eideticom.com>,
        Chaitanya Kulkarni <ckulkarnilinux@gmail.com>,
        Ralph Campbell <rcampbell@nvidia.com>,
        Stephen Bates <sbates@raithlin.com>
Subject: Re: [PATCH v10 0/8] Userspace P2PDMA with O_DIRECT NVMe devices
Message-ID: <Yy1rUyTlJZU6U6Nh@kroah.com>
References: <20220922163926.7077-1-logang@deltatee.com>
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On Thu, Sep 22, 2022 at 10:39:18AM -0600, Logan Gunthorpe wrote:
> Hi,
> 
> This is the latest P2PDMA userspace patch set. This version includes
> some cleanup from feedback of the last posting[1].
> 
> This patch set enables userspace P2PDMA by allowing userspace to mmap()
> allocated chunks of the CMB. The resulting VMA can be passed only
> to O_DIRECT IO on NVMe backed files or block devices. A flag is added
> to GUP() in Patch 1, then Patches 2 through 6 wire this flag up based
> on whether the block queue indicates P2PDMA support. Patches 7
> creates the sysfs resource that can hand out the VMAs and Patch 8
> adds brief documentation for the new interface.
> 
> Feedback welcome.
> 
> This series is based on v6.0-rc6. A git branch is available here:
> 
>   https://github.com/sbates130272/linux-p2pmem/  p2pdma_user_cmb_v10

Looks good to me, thanks for sticking with it.

greg k-h