linux-kernel - Re: [RFC 0/5] livepatch: new API to track system state changes

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Date:   Mon, 24 Jun 2019 11:27:34 +0200
From:   Nicolai Stange <nstange@...e.de>
To:     Petr Mladek <pmladek@...e.com>
Cc:     Jiri Kosina <jikos@...nel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Miroslav Benes <mbenes@...e.cz>,
        Joe Lawrence <joe.lawrence@...hat.com>,
        Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
        Nicolai Stange <nstange@...e.de>,
        live-patching@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC 0/5] livepatch: new API to track system state changes

Hi Petr,

> this is another piece in the puzzle that helps to maintain more
> livepatches.
>
> Especially pre/post (un)patch callbacks might change a system state.
> Any newly installed livepatch has to somehow deal with system state
> modifications done be already installed livepatches.
>
> This patchset provides, hopefully, a simple and generic API that
> helps to keep and pass information between the livepatches.
> It is also usable to prevent loading incompatible livepatches.

I like it a lot, many thanks for doing this!

Minor remarks/questions will follow inline.

Nicolai