Re: [PATCH v2 0/3] RISC-V: Fix a few kexec_file_load(2) failures

[Petr Tesarik]

Hi,

On 7/26/2023 11:53 AM, Petr Tesarik wrote:
> From: Petr Tesarik <petr.tesarik.ext@xxxxxxxxxx>
> 
> The kexec_file_load(2) syscall does not work at least in some kernel
> builds. For details see the relevant section in this blog post:
> 
> https://sigillatum.tesarici.cz/2023-07-21-state-of-riscv64-kdump.html
> 
> This patch series handles an additional relocation types, removes the need
> to implement a Global Offset Table (GOT) for the purgatory and fixes the
> placement of initrd.

It seems there are no objections, but what is the plan here? Take it
into 6.5 as a fix, or let it go through for-next?

Petr T

> Changelog
> =========
> 
> Changes from v1:
> - Replace memcmp() with a for loop.
> - Drop handling of 16-bit add/subtract relocations. They were used only
>   by alternatives in strcmp(), which was referenced only by string.o.
> - Add the initrd placement fix.
> 
> Petr Tesarik (1):
>   riscv/purgatory: do not link with string.o and its dependencies
> 
> Torsten Duwe (2):
>   riscv/kexec: handle R_RISCV_CALL_PLT relocation type
>   riscv/kexec: load initrd high in available memory
> 
>  arch/riscv/kernel/elf_kexec.c    |  3 ++-
>  arch/riscv/purgatory/Makefile    | 26 +-------------------------
>  arch/riscv/purgatory/purgatory.c |  6 ++++--
>  3 files changed, 7 insertions(+), 28 deletions(-)
>