Re: [PATCH 0/7] Kexec-tools: Improve RISC-V port

[Simon Horman <horms@kernel.org>]

On Fri, Sep 15, 2023 at 11:50:06AM +0800, Song Shuai wrote:
> Hi,
> 
> This series is created to improve RISC-V port of kexec-tools,
> and is based on the horms/kexec-tools:build-test-riscv-v2 branch.

In my mind the big question is how to move RISC-V support
from that branch, to being merged into main.

IIRC there were some issues that needed to be addressed.
Perhaps they are all addressed by this series, and with
some appropriate squashing we can move forwards with a series
based on main?

> 
> For your convenience, here is my Github branch for kexec-tools:
> https://github.com/sugarfillet/kexec-tools/commits/rv-Image
> 
> The first four patches fixes some build or runtime issues:  
> 
>   RISC-V: Use linux,usable-memory-range for crash kernel
>   RISC-V: Fix the undeclared ‘EM_RISCV’ build failure
>   RISC-V: Get memory ranges from iomem
>   RISC-V: Correct the usage of command line option
> 
> The last three patches enable the kexec_file_load syscall to load
> vmlinux and support loading Image binary file for two syscalls.
> 
>   RISC-V: Enable kexe_file_load
>   RISC-V: Separate elf_riscv_find_pbase out
>   RISC-V: Support loading Image binary file
> 
> Note that: 
> 
> RISC-V Linux kexec_load_file's support for Image file has been sent out but not merged [1].
> 
> [1]: https://lore.kernel.org/linux-riscv/20230914020044.1397356-1-songshuaishuai@tinylab.org/T/#t 
> 
> Li Zhengyu (1):
>   RISC-V: Enable kexe_file_load
> 
> Song Shuai (6):
>   RISC-V: Use linux,usable-memory-range for crash kernel
>   RISC-V: Fix the undeclared ‘EM_RISCV’ build failure
>   RISC-V: Get memory ranges from iomem
>   RISC-V: Correct the usage of command line option
>   RISC-V: Separate elf_riscv_find_pbase out
>   RISC-V: Support loading Image binary file
> 
>  kexec/arch/riscv/Makefile            |   2 +
>  kexec/arch/riscv/crashdump-riscv.c   |   2 +-
>  kexec/arch/riscv/image-header.h      |  88 ++++++++++++++
>  kexec/arch/riscv/iomem.h             |  10 ++
>  kexec/arch/riscv/kexec-elf-riscv.c   |  77 +-----------
>  kexec/arch/riscv/kexec-image-riscv.c |  95 +++++++++++++++
>  kexec/arch/riscv/kexec-riscv.c       | 176 ++++++++++++++++++++++-----
>  kexec/arch/riscv/kexec-riscv.h       |  21 ++++
>  kexec/kexec-syscall.h                |   3 +
>  9 files changed, 368 insertions(+), 106 deletions(-)
>  create mode 100644 kexec/arch/riscv/image-header.h
>  create mode 100644 kexec/arch/riscv/iomem.h
>  create mode 100644 kexec/arch/riscv/kexec-image-riscv.c
> 
> -- 
> 2.20.1
> 

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