Re: [PATCH V2 0/2] riscv: kexec_file: Support loading Image binary file

[Song Shuai]

在 2023/10/16 17:20, Song Shuai 写道:
> Changes since V1:
> https://lore.kernel.org/linux-riscv/20230914020044.1397356-1-songshuaishuai@xxxxxxxxxxx/
>
> - Patch1: fix the build error due to the missing functions in machine_kexec_file.c
> - Patch2: use FIELD_GET() to get the flags's endianness as Emil proposed
> - Cover: update the kexec-tools link as this one[2] which is based on horms/kexec-tools main branch
ping ...
> This series makes the kexec_file_load() syscall support to load Image binary file.
> At the same time, corresponding support for kexec-tools had been pushed to my repo[2].
>
> Now, we can leverage that kexec-tools and this series to use the
> kexec_load() or kexec_file_load() syscall to boot both vmlinux
> and Image file, as seen in these combo tests:
>
> ```
> 1. kexec -l vmlinux [other options] // or boot paniced kernel with -p
> 2. kexec -l Image
> 3. kexec -s -l vmlinux
> 4. kexec -s -l Image
> ```
>
> Though all of the aforementioned tests had been passed in my RV64 Qemu-virt,
> it should be noted that tests 3 and 4 should be the emphasis for the current series.
>
> ~~[1]: https://github.com/sugarfillet/kexec-tools/commits/rv-Image~~
> [2]: https://github.com/sugarfillet/kexec-tools/commits/main_rv
>
> Song Shuai (2):
>    riscv: kexec_file: Split the loading of kernel and others
>    riscv: kexec_file: Support loading Image binary file
>
>   arch/riscv/include/asm/kexec.h         |   6 +
>   arch/riscv/kernel/Makefile             |   2 +-
>   arch/riscv/kernel/elf_kexec.c          | 469 -------------------------
>   arch/riscv/kernel/kexec_elf.c          | 147 ++++++++
>   arch/riscv/kernel/kexec_image.c        |  98 ++++++
>   arch/riscv/kernel/machine_kexec_file.c | 344 ++++++++++++++++++
>   6 files changed, 596 insertions(+), 470 deletions(-)
>   delete mode 100644 arch/riscv/kernel/elf_kexec.c
>   create mode 100644 arch/riscv/kernel/kexec_elf.c
>   create mode 100644 arch/riscv/kernel/kexec_image.c

--
Thanks
Song Shuai