On 9/2/19 12:13 PM, Miroslav Benes wrote:
I can easily foresee more problems like those in the future. Going
forward we have to always keep track of which special sections are
needed for which architectures. Those special sections can change over
time, or can simply be overlooked for a given architecture. It's
fragile.
Indeed. It bothers me a lot. Even x86 "port" is not feature complete in
this regard (jump labels, alternatives,...) and who knows what lurks in
the corners of the other architectures we support.
So it is in itself reason enough to do something about late module
patching.
Hi Miroslav,
I was tinkering with the "blue-sky" ideas that I mentioned to Josh the
other day. I dunno if you had a chance to look at what removing that
code looks like, but I can continue to flesh out that idea if it looks
interesting:
https://github.com/joe-lawrence/linux/tree/blue-sky
A full demo would require packaging up replacement .ko's with a
livepatch, as well as "blacklisting" those deprecated .kos, etc. But
that's all I had time to cook up last week before our holiday weekend here.
Regards,
-- Joe
