Re: [PATCH v4 00/11] livepatch,module: Remove .klp.arch and module_disable_ro()

Jessica Yu
2020-04-30T11:33:18Z

+++ Josh Poimboeuf [29/04/20 10:24 -0500]:
>v4:
>- Fixed rebase bisection regression [Miroslav]
>- Made module_enable_ro() static [Jessica]
>- Added Acked-by's
>
>v3:
>- klp: split klp_write_relocations() into object/section specific
> functions [joe]
>- s390: fix plt/got writes [joe]
>- s390: remove text_mutex usage [mbenes]
>- x86: do text_poke_sync() before releasing text_mutex [peterz]
>- split x86 text_mutex changes into separate patch [mbenes]
>
>v2:
>- add vmlinux.ko check [peterz]
>- remove 'klp_object' forward declaration [mbenes]
>- use text_mutex [jeyu]
>- fix documentation TOC [jeyu]
>- fix s390 issues [mbenes]
>- upstream kpatch-build now supports this
> (though it's only enabled for Linux >= 5.8)
>
>These patches add simplifications and improvements for some issues Peter
>found six months ago, as part of his non-writable text code (W^X)
>cleanups.
>
>Highlights:
>
>- Remove the livepatch arch-specific .klp.arch sections, which were used
> to do paravirt patching and alternatives patching for livepatch
> replacement code.
>
>- Add support for jump labels in patched code (only for static keys
> which live in vmlinux).
>
>- Remove the last module_disable_ro() usage.

Nice! Glad the .klp.arch sections are going away. For kernel/module.c
and include/linux/module.h parts:

Acked-by: Jessica Yu <jeyu@kernel.org>