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

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Date:   Wed, 13 Dec 2023 18:26:02 +0800
From:   Song Shuai <songshuaishuai@...ylab.org>
To:     paul.walmsley@...ive.com, palmer@...belt.com,
        aou@...s.berkeley.edu, lihuafei1@...wei.com,
        conor.dooley@...rochip.com, liaochang1@...wei.com,
        guoren@...nel.org, ajones@...tanamicro.com, alexghiti@...osinc.com,
        evan@...osinc.com, sunilvl@...tanamicro.com,
        xianting.tian@...ux.alibaba.com, samitolvanen@...gle.com,
        masahiroy@...nel.org, apatel@...tanamicro.com, jszhang@...nel.org,
        duwe@...e.de, eric.devolder@...cle.com,
        emil.renner.berthing@...onical.com
Cc:     linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2 0/2] riscv: kexec_file: Support loading Image binary
 file



在 2023/10/16 17:20, Song Shuai 写道:
> Changes since V1:
> https://lore.kernel.org/linux-riscv/20230914020044.1397356-1-songshuaishuai@tinylab.org/
> 
> - 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