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Wed, 09 Nov 2022 10:44:44 -0800 (PST) From: Jens Axboe To: linux-pci@vger.kernel.org, Logan Gunthorpe , linux-nvme@lists.infradead.org, linux-mm@kvack.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Minturn Dave B , Jason Gunthorpe , Stephen Bates , Xiong Jianxin , Matthew Wilcox , Martin Oliveira , Chaitanya Kulkarni , Bjorn Helgaas , Dave Hansen , Ralph Campbell , Dan Williams , Christoph Hellwig , Jason Ekstrand , Robin Murphy , Ira Weiny , John Hubbard , Christian König , Daniel Vetter , Greg Kroah-Hartman , Don Dutile In-Reply-To: <20221021174116.7200-1-logang@deltatee.com> References: <20221021174116.7200-1-logang@deltatee.com> Subject: Re: [PATCH v11 0/9] Userspace P2PDMA with O_DIRECT NVMe devices Message-Id: <166801948299.62038.7880027993878682342.b4-ty@kernel.dk> Date: Wed, 09 Nov 2022 11:44:42 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-Mailer: b4 0.11.0-dev-d9ed3 ARC-Authentication-Results: i=1; imf14.hostedemail.com; 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dkim=pass header.d=kernel-dk.20210112.gappssmtp.com header.s=20210112 header.b=b3Vlitfa; spf=pass (imf14.hostedemail.com: domain of axboe@kernel.dk designates 209.85.216.52 as permitted sender) smtp.mailfrom=axboe@kernel.dk; dmarc=none X-Rspam-User: X-Rspamd-Server: rspam06 X-HE-Tag: 1668019486-279072 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, 21 Oct 2022 11:41:07 -0600, Logan Gunthorpe wrote: > This is the latest P2PDMA userspace patch set. This version includes > some cleanup from feedback from 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. > > [...] Applied, thanks! [1/9] mm: allow multiple error returns in try_grab_page() commit: 0f0892356fa174bdd8bd655c820ee3658c4c9f01 [2/9] mm: introduce FOLL_PCI_P2PDMA to gate getting PCI P2PDMA pages commit: 4003f107fa2eabb0aab90e37a1ed7b74c6f0d132 [3/9] iov_iter: introduce iov_iter_get_pages_[alloc_]flags() commit: d82076403cef7fcd1e7617c9db48bf21ebdc1f9c [4/9] block: add check when merging zone device pages commit: 49580e690755d0e51ed7aa2c33225dd884fa738a [5/9] lib/scatterlist: add check when merging zone device pages commit: 1567b49d1a4081ba7e1a0ff2dc39bc58c59f2a51 [6/9] block: set FOLL_PCI_P2PDMA in __bio_iov_iter_get_pages() commit: 5e3e3f2e15df46abcab1959f93f214f778b6ec49 [7/9] block: set FOLL_PCI_P2PDMA in bio_map_user_iov() commit: 7ee4ccf57484d260c37b29f9a48b65c4101403e8 [8/9] PCI/P2PDMA: Allow userspace VMA allocations through sysfs commit: 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 [9/9] ABI: sysfs-bus-pci: add documentation for p2pmem allocate commit: 6d4338cb4070a762dba0cadee00b7ec206d9f868 Best regards, -- Jens Axboe