Thread (42 messages) 42 messages, 5 authors, 1h ago

Re: [PATCH v6 01/14] kexec: Fix CMA segment address translation with non-zero text_offset

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From: Mike Rapoport <rppt@kernel.org>
Date: 2026-10-20 08:10:11
Also in: driver-core, kexec, lkml, loongarch

kimage_load_cma_segment() and kimage_map_segment() both translate
a CMA segment using page_address(cma), which returns the CMA base
address. This ignores segment->mem.

On arm64, image_load() adds text_offset to segment->mem before the
segment is loaded:

	kernel_segment->mem += text_offset;
	kernel_segment->memsz -= text_offset;
	image->start = kernel_segment->mem;
That's true, but since commit 751c263bb74f ("arm64: remove TEXT_OFFSET
randomization") TEXT_OFFSET is always zero. This is upstream from v5.8,
so no LTS kernels has non-zero TEST_OFFSET.

Maybe we should rather start deprecating .text_offset in arm64?

-- 
Sincerely yours,
Mike.

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