[PATCH v5 00/14] Remove DMA map_page/map_resource and their unmap callbacks
Leon Romanovsky
leon at kernel.org
Wed Oct 15 20:12:46 AEDT 2025
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 <leon at kernel.org>
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