linux-kernel - Re: [PATCH v2 0/4] livepatch: Add garbage collection for shadow variables

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Message-ID: <Y9OssHJ4yerHPifG@alley>
Date:   Fri, 27 Jan 2023 11:51:28 +0100
From:   Petr Mladek <pmladek@...e.com>
To:     Josh Poimboeuf <jpoimboe@...nel.org>
Cc:     Joe Lawrence <joe.lawrence@...hat.com>,
        Marcos Paulo de Souza <mpdesouza@...e.de>,
        Marcos Paulo de Souza <mpdesouza@...e.com>,
        linux-kernel@...r.kernel.org, live-patching@...r.kernel.org,
        jpoimboe@...hat.com
Subject: Re: [PATCH v2 0/4] livepatch: Add garbage collection for shadow
 variables

On Thu 2023-01-26 10:30:05, Josh Poimboeuf wrote:
> On Thu, Jan 26, 2023 at 12:05:02PM -0500, Joe Lawrence wrote:
> > On 1/26/23 11:35, Petr Mladek wrote:
> > > 
> > > Josh accepted the idea in the end so we could actually push the entire
> > > patchset. I am not sure if anyone else would like to review it
> > > so I going to wait a bit longer.
> > > 
> > > Resume:
> > > 
> > > I am going to push the entire patchset the following week (Wednesday?)
> > > unless anyone asks for more time or finds a problem.
> > > 
> > 
> > Hi Petr,
> > 
> > Re docs: patches (3) and (4) change the klp_shadow_* API.  There should
> > be updates (and possibly examples) to
> > Documentation/livepatch/shadow-vars.rst.
> 
> Agreed, a documentation update is definitely needed.
> 
> Also, as I mentioned, we need to document the motivation behind the
> change and the expected use cases.  Either in the commit log or the
> documentation, or even better, some combination.  There was some very
> useful background from Nicolai and some very helpful clarifications from
> Petr.  We should make sure all that doesn't get lost in depths of the
> mailing list.

Great point. I have completely forgot about it. And did not catch the
request when quickly scaning the older replies yesterday.

> And, while I did finally accept the idea, I still need to do a more
> in-depth review of the patches.  Patches 1-2 look fine, but please give
> me some time to properly review patches 3 & 4.

Sure. It is great that the code will get another review!

I am going to wait for v3 with updated documentation and review.

Best Regards,
Petr