Re: [PATCH] kbuild: use -flive-patching when CONFIG_LIVEPATCH is enabled
From: Miroslav Benes
Date: Fri Dec 21 2018 - 04:46:06 EST
On Thu, 20 Dec 2018, Josh Poimboeuf wrote:
> On Thu, Dec 20, 2018 at 09:33:05AM +0100, Miroslav Benes wrote:
> > > > Though, upstream, almost everybody seems to use kpatch-build, for which
> > > > this patch doesn't help. And people will continue to do so until we
> > > > have decent source-based tooling. Will the klp-convert patches be
> > > > revived soon?
> > >
> > > Let me add Joao, who's working on that.
> > >
> > > Joao, I think you had something basically ready for upstream exposure,
> > > right?
> > I think that when Joao posted it a long time ago, the conclusion was that
> > it would be better to wait for the source-based tooling and have the
> > complete solution. I may misremember though.
> > If Josh thinks that it would be acceptable to have klp-convert merged even
> > without the tooling, I'm all for it.
> > We're about to start using it at SUSE and staying close to upstream would
> > definitely be better.
> A complete toolchain should definitely be the end goal.
> But as a usable first step, only *some* of the tooling is required,
> since some of the steps can be done manually, right?
> So starting out, for something usable, I believe the following would be
> the bare minimum:
> * -flive-patching
> * The analysis tool which analyzes the -fdump-ipa-clones files
> * klp-convert
> * Documentation describing the end-to-end patch creation process,
> including the manual steps and how to use the above tools
> Did I miss anything?
> Then over time we can fill in the gaps (manual steps) with automation.