From: Leon Romanovsky <leon@kernel•org>
To: Marek Szyprowski <m.szyprowski@samsung•com>
Cc: "Christoph Hellwig" <hch@lst•de>,
"Jonathan Corbet" <corbet@lwn•net>,
"Madhavan Srinivasan" <maddy@linux•ibm.com>,
"Michael Ellerman" <mpe@ellerman•id.au>,
"Nicholas Piggin" <npiggin@gmail•com>,
"Christophe Leroy" <christophe.leroy@csgroup•eu>,
"Robin Murphy" <robin.murphy@arm•com>,
"Joerg Roedel" <joro@8bytes•org>, "Will Deacon" <will@kernel•org>,
"Michael S. Tsirkin" <mst@redhat•com>,
"Jason Wang" <jasowang@redhat•com>,
"Xuan Zhuo" <xuanzhuo@linux•alibaba.com>,
"Eugenio Pérez" <eperezma@redhat•com>,
"Alexander Potapenko" <glider@google•com>,
"Marco Elver" <elver@google•com>,
"Dmitry Vyukov" <dvyukov@google•com>,
"Masami Hiramatsu" <mhiramat@kernel•org>,
"Mathieu Desnoyers" <mathieu.desnoyers@efficios•com>,
"Jérôme Glisse" <jglisse@redhat•com>,
"Andrew Morton" <akpm@linux-foundation•org>,
linux-doc@vger•kernel.org, linux-kernel@vger•kernel.org,
linuxppc-dev@lists•ozlabs.org, iommu@lists•linux.dev,
virtualization@lists•linux.dev, kasan-dev@googlegroups•com,
linux-trace-kernel@vger•kernel.org, linux-mm@kvack•org
Subject: [PATCH 0/8] dma-mapping: migrate to physical address-based API
Date: Wed, 25 Jun 2025 16:18:57 +0300 [thread overview]
Message-ID: <cover.1750854543.git.leon@kernel.org> (raw)
This series refactors the DMA mapping to use physical addresses
as the primary interface instead of page+offset parameters. This
change aligns the DMA API with the underlying hardware reality where
DMA operations work with physical addresses, not page structures.
The series consists of 8 patches that progressively convert the DMA
mapping infrastructure from page-based to physical address-based APIs:
The series maintains backward compatibility by keeping the old
page-based API as wrapper functions around the new physical
address-based implementations.
Thanks
Leon Romanovsky (8):
dma-debug: refactor to use physical addresses for page mapping
dma-mapping: rename trace_dma_*map_page to trace_dma_*map_phys
iommu/dma: rename iommu_dma_*map_page to iommu_dma_*map_phys
dma-mapping: convert dma_direct_*map_page to be phys_addr_t based
kmsan: convert kmsan_handle_dma to use physical addresses
dma-mapping: fail early if physical address is mapped through platform
callback
dma-mapping: export new dma_*map_phys() interface
mm/hmm: migrate to physical address-based DMA mapping API
Documentation/core-api/dma-api.rst | 4 +-
arch/powerpc/kernel/dma-iommu.c | 4 +-
drivers/iommu/dma-iommu.c | 14 +++----
drivers/virtio/virtio_ring.c | 4 +-
include/linux/dma-map-ops.h | 8 ++--
include/linux/dma-mapping.h | 13 ++++++
include/linux/iommu-dma.h | 7 ++--
include/linux/kmsan.h | 12 +++---
include/trace/events/dma.h | 4 +-
kernel/dma/debug.c | 28 ++++++++-----
kernel/dma/debug.h | 16 ++++---
kernel/dma/direct.c | 6 +--
kernel/dma/direct.h | 13 +++---
kernel/dma/mapping.c | 67 +++++++++++++++++++++---------
kernel/dma/ops_helpers.c | 6 +--
mm/hmm.c | 8 ++--
mm/kmsan/hooks.c | 36 ++++++++++++----
tools/virtio/linux/kmsan.h | 2 +-
18 files changed, 159 insertions(+), 93 deletions(-)
--
2.49.0
next reply other threads:[~2025-06-25 13:19 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20250625131920eucas1p271b196cde042bd39ac08fb12beff5baf@eucas1p2.samsung.com>
2025-06-25 13:18 ` Leon Romanovsky [this message]
2025-06-25 13:18 ` [PATCH 1/8] dma-debug: refactor to use physical addresses for page mapping Leon Romanovsky
2025-06-25 13:18 ` [PATCH 2/8] dma-mapping: rename trace_dma_*map_page to trace_dma_*map_phys Leon Romanovsky
2025-06-25 13:19 ` [PATCH 3/8] iommu/dma: rename iommu_dma_*map_page to iommu_dma_*map_phys Leon Romanovsky
2025-06-25 13:19 ` [PATCH 4/8] dma-mapping: convert dma_direct_*map_page to be phys_addr_t based Leon Romanovsky
2025-06-25 13:19 ` [PATCH 5/8] kmsan: convert kmsan_handle_dma to use physical addresses Leon Romanovsky
2025-06-26 17:43 ` Alexander Potapenko
2025-06-26 18:45 ` Leon Romanovsky
2025-06-27 16:28 ` Alexander Potapenko
2025-06-25 13:19 ` [PATCH 6/8] dma-mapping: fail early if physical address is mapped through platform callback Leon Romanovsky
2025-07-25 20:04 ` Robin Murphy
2025-07-27 6:30 ` Leon Romanovsky
2025-06-25 13:19 ` [PATCH 7/8] dma-mapping: export new dma_*map_phys() interface Leon Romanovsky
2025-06-25 13:19 ` [PATCH 8/8] mm/hmm: migrate to physical address-based DMA mapping API Leon Romanovsky
2025-07-15 13:24 ` Will Deacon
2025-07-15 13:58 ` Leon Romanovsky
2025-06-27 13:44 ` [PATCH 0/8] dma-mapping: migrate to physical address-based API Marek Szyprowski
2025-06-27 17:02 ` Leon Romanovsky
2025-06-30 13:38 ` Christoph Hellwig
2025-07-08 10:27 ` Marek Szyprowski
2025-07-08 11:00 ` Leon Romanovsky
2025-07-08 11:45 ` Marek Szyprowski
2025-07-08 12:06 ` Leon Romanovsky
2025-07-08 12:56 ` Marek Szyprowski
2025-07-08 15:57 ` Marek Szyprowski
2025-07-30 11:11 ` Robin Murphy
2025-07-30 13:40 ` Leon Romanovsky
2025-07-30 14:28 ` Jason Gunthorpe
2025-07-31 6:01 ` Leon Romanovsky
2025-07-30 16:32 ` Marek Szyprowski
2025-07-31 17:37 ` Matthew Wilcox
2025-08-03 15:59 ` Jason Gunthorpe
2025-08-04 3:37 ` Matthew Wilcox
2025-08-05 15:36 ` Jason Gunthorpe
2025-07-06 6:00 ` Leon Romanovsky
2025-07-25 20:05 ` Robin Murphy
2025-07-29 14:03 ` Jason Gunthorpe
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