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R. Silva" , Ankit Agrawal , Yishai Hadas , Shameer Kolothum , Kevin Tian Cc: Krishnakant Jaju , Matt Ochs , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, iommu@lists.linux.dev, linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, kvm@vger.kernel.org, linux-hardening@vger.kernel.org, Vivek Kasireddy Subject: Re: [PATCH v6 00/11] vfio/pci: Allow MMIO regions to be exported through dma-buf Message-ID: <20251104070021.GC50752@unreal> References: <20251102-dmabuf-vfio-v6-0-d773cff0db9f@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251102-dmabuf-vfio-v6-0-d773cff0db9f@nvidia.com> X-Rspamd-Queue-Id: 3B4B5140009 X-Rspamd-Server: rspam07 X-Stat-Signature: qbcjhxo8g1ohdw6rotzj39oit8i53cma X-Rspam-User: X-HE-Tag: 1762239631-721718 X-HE-Meta: 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 0DrmYeM/ XmhApzjXDUE4W2tI9v7nAlMUmvIc2p0UHc9ng3oyNDFV+yi3Hmyvg0lsLBQNvzUq43qX8/b9gqkq8Yk3DmD661QmSOwXyGe9A7p+fmVJXc7xe2Vtoix2vSpZYIK7+xgbdHT+jNdLRbQqaKG6KR2anugyy8pLxqwTomAf2SnCGJpz07GiDFZsilOl0GhJqjt27kj9gZeNvQW914MjQa5FX4oJgRa9qzrXrUiios7LnsHwUgeKeyL4t1A+RCLE/ruPPONHD0CTND3EbsTUD+2IBNC1wOQ== 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: List-Subscribe: List-Unsubscribe: On Sun, Nov 02, 2025 at 10:00:48AM +0200, Leon Romanovsky wrote: <...> > --- > Jason Gunthorpe (2): > PCI/P2PDMA: Document DMABUF model > vfio/nvgrace: Support get_dmabuf_phys > > Leon Romanovsky (7): > PCI/P2PDMA: Separate the mmap() support from the core logic > PCI/P2PDMA: Simplify bus address mapping API > PCI/P2PDMA: Refactor to separate core P2P functionality from memory allocation > PCI/P2PDMA: Provide an access to pci_p2pdma_map_type() function > dma-buf: provide phys_vec to scatter-gather mapping routine > vfio/pci: Enable peer-to-peer DMA transactions by default > vfio/pci: Add dma-buf export support for MMIO regions > > Vivek Kasireddy (2): > vfio: Export vfio device get and put registration helpers > vfio/pci: Share the core device pointer while invoking feature functions Hi, Can we get Acked-by for p2pdma and DMABUF parts? Thanks > > Documentation/driver-api/pci/p2pdma.rst | 95 +++++++--- > block/blk-mq-dma.c | 2 +- > drivers/dma-buf/dma-buf.c | 235 ++++++++++++++++++++++++ > drivers/iommu/dma-iommu.c | 4 +- > drivers/pci/p2pdma.c | 182 +++++++++++++----- > drivers/vfio/pci/Kconfig | 3 + > drivers/vfio/pci/Makefile | 1 + > drivers/vfio/pci/nvgrace-gpu/main.c | 56 ++++++ > drivers/vfio/pci/vfio_pci.c | 5 + > drivers/vfio/pci/vfio_pci_config.c | 22 ++- > drivers/vfio/pci/vfio_pci_core.c | 56 ++++-- > drivers/vfio/pci/vfio_pci_dmabuf.c | 315 ++++++++++++++++++++++++++++++++ > drivers/vfio/pci/vfio_pci_priv.h | 23 +++ > drivers/vfio/vfio_main.c | 2 + > include/linux/dma-buf.h | 18 ++ > include/linux/pci-p2pdma.h | 120 +++++++----- > include/linux/vfio.h | 2 + > include/linux/vfio_pci_core.h | 42 +++++ > include/uapi/linux/vfio.h | 27 +++ > kernel/dma/direct.c | 4 +- > mm/hmm.c | 2 +- > 21 files changed, 1077 insertions(+), 139 deletions(-) > --- > base-commit: 3a8660878839faadb4f1a6dd72c3179c1df56787 > change-id: 20251016-dmabuf-vfio-6cef732adf5a > > Best regards, > -- > Leon Romanovsky > >