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

[Petr Tesarik <petrtesarik@huaweicloud.com>]

From: Petr Tesarik <petr.tesarik.ext@huawei.com>

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.

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(-)

-- 
2.25.1