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b=GZij/KhfBIUnbU4lbHxjP88/lDFzJVzpN+LpEfBwzehWsDkUfges9TR5IyiZTnUhz OadLn/vpSTN0knIfMqxk1/W2CkIVAi3gxUO12Curbh72sdoAFUoZHMoQdkblwXYtCK DBBS15tXdkII8NQBEHBXo5TqCjHgGsdp0FLQhgc8yB1hMi8M7wr3Or6XwNhMDDmE5z Em/8soyscY18uKVRMTABiIjE1R3FnnTzVaf+jWOosD8zdiT3uo+rw2d6i+cCw9KzmJ 6lq4oh/7XQmhm5eJkFy7pTkaIXNXQvR9uEMZs2rWb31Otvoz0nnuBSZNCxcv8TqFNT vTyCJMK4plyfw== Date: Thu, 24 Jul 2025 11:13:21 +0300 From: Leon Romanovsky To: Christoph Hellwig Cc: Alex Williamson , Jason Gunthorpe , Andrew Morton , Bjorn Helgaas , Christian =?iso-8859-1?Q?K=F6nig?= , dri-devel@lists.freedesktop.org, iommu@lists.linux.dev, Jens Axboe , =?iso-8859-1?B?Suly9G1l?= Glisse , Joerg Roedel , kvm@vger.kernel.org, linaro-mm-sig@lists.linaro.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-mm@kvack.org, linux-pci@vger.kernel.org, Logan Gunthorpe , Marek Szyprowski , Robin Murphy , Sumit Semwal , Vivek Kasireddy , Will Deacon Subject: Re: [PATCH 05/10] PCI/P2PDMA: Export pci_p2pdma_map_type() function Message-ID: <20250724081321.GT402218@unreal> References: <82e62eb59afcd39b68ae143573d5ed113a92344e.1753274085.git.leonro@nvidia.com> <20250724080313.GA31887@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250724080313.GA31887@lst.de> X-Stat-Signature: k8pi8bp6ad9k5cqg8rcsgnphmz7tw4qg X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: E9D7C180008 X-Rspam-User: X-HE-Tag: 1753344806-43726 X-HE-Meta: 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 mU4jvopH W3oJbeBNnNnLe20HTHTf8UoOpgvemcxe9sQjN5j5xoJyK3Y1PAUQm21ONzeTpxoDX/ySgUlsTEgWM55ze/tUsjyUNFryUMCfa/Qb2MnN0gNARb/Ulo12LHxQ0koqWkG7uA2ZfXCfLY6JlU2eszpwIsmrYYB8PLm2Njh13P2gSfmYCjF88bj2/Rd240W17f074SoKRjZNnOIQJSdj6PuaJvNEFFXeyEO/ETeYAzLs+gimTuXWuq5KaHMIg8/XmHfrpnZQcKL7ppbOCyu4q79rvdTnaX478DoNjZ+VpqJ9oShaHjA1qzrUpRZ6X2H/ctwPQ34GmdqpHFdlphdU2Xc0sUhsYhQ== 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 Thu, Jul 24, 2025 at 10:03:13AM +0200, Christoph Hellwig wrote: > On Wed, Jul 23, 2025 at 04:00:06PM +0300, Leon Romanovsky wrote: > > From: Leon Romanovsky > > > > Export the pci_p2pdma_map_type() function to allow external modules > > and subsystems to determine the appropriate mapping type for P2PDMA > > transfers between a provider and target device. > > External modules have no business doing this. VFIO PCI code is built as module. There is no way to access PCI p2p code without exporting functions in it. Thanks > >