[PATCH v4 0/4] kexec-tool：bug fix for crashdump load on riscv

[luo.haiyang at zte.com.cn]

From: Luo Haiyang <luo.haiyang at zte.com.cn>

This patchset fixes kexec-tool related to crashdump load on riscv

patch 1: crashload should use all system RAM but crash reserved memory.
patch 2: make the phys_to_virt function return the correct value.
patch 3: vmcore-dmesg accesses the address located in the bss segment,
use kernel image to creat kernel text elf header.
patch 4: due to the kernel image being additionally exported in /proc/iomem,
the kernel memory range is not correctly handled by to_be_excluded.

Changes from v3:
- sorry for the incorrect email format in the previous submission.

Changes from v2:
- use kernel image to creat kernel text elf header
- do not exclude kernel memory range
- https://lore.kernel.org/kexec/20260518145742805S2A5Zwk9KwoEtGDh4p3Pl@zte.com.cn/T/#md89827a089395745d3bd361889e4f3c490641732

Changes from v1:
- Add patch 2 and patch 3 to fix other bug
- https://lore.kernel.org/kexec/20260513171150519t11GTC14QEEV4EgIurNHM@zte.com.cn/T/#u

Luo Haiyang (4):
  RISC-V: fix crashdump load memory ranges
  RISCV: Fix incorrect virtual address translation in crashdump load
  RISC-V: use kernel image to creat kernel text elf header
  RISC-V: kernel image memory rang should not be excluded

 kexec/arch/riscv/Makefile          |   2 +
 kexec/arch/riscv/crashdump-riscv.c | 218 +++++++++++++++++++----------
 kexec/arch/riscv/iomem.h           |   3 +-
 kexec/arch/riscv/kexec-riscv.c     |   8 +-
 util_lib/elf_info.c                |  41 ++++--
 util_lib/include/elf_info.h        |   1 +
 6 files changed, 184 insertions(+), 89 deletions(-)

-- 
2.27.0