linux-kernel - Re: [PATCH] mm/userfaultfd: fix kmap_local LIFO ordering for CONFIG

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Message-Id: <20250820212423.fbac2b17eb4f6a9667a8c979@linux-foundation.org>
Date: Wed, 20 Aug 2025 21:24:23 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: Sasha Levin <sashal@...nel.org>
Cc: david@...hat.com, surenb@...gle.com, aarcange@...hat.com,
 linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm/userfaultfd: fix kmap_local LIFO ordering for
 CONFIG_HIGHPTE

On Fri, 1 Aug 2025 17:56:25 -0400 Sasha Levin <sashal@...nel.org> wrote:

> >> Fixes: adef440691ba ("userfaultfd: UFFDIO_MOVE uABI")
> >> Co-developed-by: Claude claude-opus-4-20250514
> >
> >Well this is innovative.  I doubt if Co-developed-by: is appropriate
> >for this (where's Claude's Signed-off-by:?)
> 
> Claude (or any other AI) can't legally sign off on code :)
> 
> >I'd support creating a new changelog tag for this case.
> 
> This is in the context of a proposal on workflows@:
> https://lore.kernel.org/workflows/20250728105634.GF787@pendragon.ideasonboard.com/T/#t
> 
> The Co-developed-by: usage wasn't my proposal, but it looked like the
> majority of folks were okay with it.
> 

I need to do something about this and the discussion over on
ksummit@...ts.linux.dev has been as beer-addled as one would expect.

Oh well.  I guess for now we can welcome Claude to the kernel
development team.