riscv: 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(). Call get_nr_ram_ranges_callback()
  to pre-counts the max number of memory ranges.

- arch_crash_populate_cmem(). Use prepare_elf64_ram_headers_callback()
  to collects the memory ranges and fills them into cmem.

Cc: Paul Walmsley <pjw@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Guo Ren <guoren@kernel.org>
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>
Reviewed-by: Guo Ren <guoren@kernel.org>
Link: https://patch.msgid.link/20260629094746.191843-7-ruanjinjie@huawei.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>

...

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Jinjie Ruan 2026-06-29 17:47:42 +08:00 • committed by Mike Rapoport (Microsoft)

parent a8f09f2a74

commit 7b078a0aa2

1 changed files with 12 additions and 35 deletions

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arch/riscv/kernel/machine_kexec_file.c

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