kmsan: convert kmsan_handle_dma to use physical addresses

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Convert the KMSAN DMA handling function from page-based to physical
address-based interface.

The refactoring renames kmsan_handle_dma() parameters from accepting
(struct page *page, size_t offset, size_t size) to (phys_addr_t phys,
size_t size). The existing semantics where callers are expected to
provide only kmap memory is continued here.

Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/3557cbaf66e935bc794f37d2b891ef75cbf2c80c.1757423202.git.leonro@nvidia.com

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Leon Romanovsky 2025-09-09 16:27:36 +03:00 • committed by Marek Szyprowski

parent e53d29f957

commit 6eb1e769b2

5 changed files with 15 additions and 13 deletions

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4

drivers/virtio/virtio_ring.c

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9

include/linux/kmsan.h

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3

kernel/dma/mapping.c

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10

mm/kmsan/hooks.c

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2

tools/virtio/linux/kmsan.h

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