Re: [PATCH v3 5/6] x86/ftrace: Use text_poke()

From: Joe Lawrence
Date: Tue Oct 15 2019 - 11:07:02 EST

On 10/15/19 10:13 AM, Miroslav Benes wrote:
Yes, it does. klp_module_coming() calls module_disable_ro() on all
patching modules which patch the coming module in order to call
apply_relocate_add(). New (patching) code for a module can be relocated
only when the relevant module is loaded.

FWIW, would the LPC blue-sky2 model (ie, Steve's suggestion @ plumber's where livepatches only patch a single object and updates are kept on disk to handle coming module updates as they are loaded) eliminate those outstanding relocations and the need to perform this late permission flipping?

-- Joe