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Bottomley" , Helge Deller , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Geoff Levand , "David S. Miller" , Andreas Larsson , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" Cc: iommu@lists.linux.dev, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, xen-devel@lists.xenproject.org, linux-alpha@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, Magnus Lindholm , Jason Gunthorpe Subject: [PATCH v5 00/14] Remove DMA map_page/map_resource and their unmap callbacks Date: Wed, 15 Oct 2025 12:12:46 +0300 Message-ID: <20251015-remove-map-page-v5-0-3bbfe3a25cdf@kernel.org> X-Mailer: git-send-email 2.51.0 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Change-ID: 20251015-remove-map-page-a28302e6cc7d X-Mailer: b4 0.15-dev Content-Transfer-Encoding: 8bit This series is a combination of previous two steps [1, 2] to reduce number of accesses to struct page in the code "below" DMA layer. In this series, the DMA .map_page/.map_resource/.unmap_page/.unmap_resource callbacks are converted to newly introduced .map_phys/.unmap_phys interfaces. Thanks [1] https://lore.kernel.org/all/cover.1758203802.git.leon@kernel.org [2] https://lore.kernel.org/all/cover.1759071169.git.leon@kernel.org --- Leon Romanovsky (14): dma-mapping: prepare dma_map_ops to conversion to physical address dma-mapping: convert dummy ops to physical address mapping ARM: dma-mapping: Reduce struct page exposure in arch_sync_dma*() ARM: dma-mapping: Switch to physical address mapping callbacks xen: swiotlb: Switch to physical address mapping callbacks dma-mapping: remove unused mapping resource callbacks alpha: Convert mapping routine to rely on physical address MIPS/jazzdma: Provide physical address directly parisc: Convert DMA map_page to map_phys interface powerpc: Convert to physical address DMA mapping sparc: Use physical address DMA mapping x86: Use physical address for DMA mapping xen: swiotlb: Convert mapping routine to rely on physical address dma-mapping: remove unused map_page callback arch/alpha/kernel/pci_iommu.c | 48 ++++----- arch/arm/mm/dma-mapping.c | 180 +++++++++---------------------- arch/mips/jazz/jazzdma.c | 20 ++-- arch/powerpc/include/asm/iommu.h | 8 +- arch/powerpc/kernel/dma-iommu.c | 22 ++-- arch/powerpc/kernel/iommu.c | 14 +-- arch/powerpc/platforms/ps3/system-bus.c | 33 +++--- arch/powerpc/platforms/pseries/ibmebus.c | 15 +-- arch/powerpc/platforms/pseries/vio.c | 21 ++-- arch/sparc/kernel/iommu.c | 30 ++++-- arch/sparc/kernel/pci_sun4v.c | 31 +++--- arch/sparc/mm/io-unit.c | 38 +++---- arch/sparc/mm/iommu.c | 46 ++++---- arch/x86/kernel/amd_gart_64.c | 19 ++-- drivers/parisc/ccio-dma.c | 54 +++++----- drivers/parisc/iommu-helpers.h | 10 +- drivers/parisc/sba_iommu.c | 54 +++++----- drivers/xen/grant-dma-ops.c | 20 ++-- drivers/xen/swiotlb-xen.c | 63 +++++------ include/linux/dma-map-ops.h | 14 +-- kernel/dma/dummy.c | 13 ++- kernel/dma/mapping.c | 26 +---- kernel/dma/ops_helpers.c | 12 ++- 23 files changed, 361 insertions(+), 430 deletions(-) --- base-commit: 3a8660878839faadb4f1a6dd72c3179c1df56787 change-id: 20251015-remove-map-page-a28302e6cc7d Best regards, -- Leon Romanovsky