On Thu, Jun 26, 2025 at 04:55:29PM -0700, Josh Poimboeuf wrote: > An upcoming patch will add the SHF_MERGE flag to x86 __jump_table and > __bug_table so their entry sizes can be defined in inline asm. > > However, those sections have SHF_WRITE, which the Clang linker (lld) > explicitly forbids combining with SHF_MERGE. > > Those sections are modified at runtime and must remain writable. While > SHF_WRITE is ignored by vmlinux, it's still needed for modules. > > To work around the linker interference, remove SHF_WRITE during > compilation and restore it after linking the module.
This is vile... but I'm not sure I have a better solution. Eventually we should get the toolchains fixed, but we can't very well mandate clang-21+ to build x86 just yet.
