arm64: kexec_file: Use crash_prepare_headers() helper to simplify code

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Use the newly introduced crash_prepare_headers() function to replace
the existing prepare_elf_headers(), allocate cmem and exclude crash
kernel memory in the crash core, which reduce code duplication.

Only the following two architecture functions need to be implemented:
- arch_get_system_nr_ranges(). Use for_each_mem_range() to traverse
  and pre-count the max number of memory ranges.

- arch_crash_populate_cmem(). Use for_each_mem_range to traverse
  and collect the memory ranges and fills them into cmem.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Acked-by: Baoquan He <bhe@redhat.com>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://patch.msgid.link/20260629094746.191843-5-ruanjinjie@huawei.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>

...

This commit is contained in:

Jinjie Ruan 2026-06-29 17:47:40 +08:00 • committed by Mike Rapoport (Microsoft)

parent 5beabef0cf

commit 201b561cbc

1 changed files with 12 additions and 28 deletions

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arch/arm64/kernel/machine_kexec_file.c

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