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b=nLjdZUQrco0yrBsfgTjmkII/EchFrBZc3oUnkgzCbhO9PiSuT3OJHBPNnOmZU/qcm W8vSazTpvJGQ56zyEZcwal9IKlGpIMiBSAUQNh1nbU/Fgt5M6/X2HfsBYi9Ybl1qc0 NbgexLJbd+TEdcLzM/VVHiY956Fk0Fw5O9k2IjmURetxJcXVRk0tDyZpYJOSXuVuTT HhRAAHWu42OkPojnJYm+GyOszaNXb5xGvT/Wi6yQlg3rRxO0cjwc08lXmyAQjSNsD5 jMueGfHlncQvGJfTVm9vGi2NizVzLpE9Hyl0kFnSGhn88LekF/R6ScFKoKrN6IF1be hWX9ZG06deOtQ== Date: Thu, 21 Aug 2025 09:02:10 -0400 From: Sasha Levin To: Andrew Morton Cc: david@redhat.com, surenb@google.com, aarcange@redhat.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] mm/userfaultfd: fix kmap_local LIFO ordering for CONFIG_HIGHPTE Message-ID: References: <20250731144431.773923-1-sashal@kernel.org> <20250801141101.9f3555a172609cb64fde7f71@linux-foundation.org> <20250820212423.fbac2b17eb4f6a9667a8c979@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20250820212423.fbac2b17eb4f6a9667a8c979@linux-foundation.org> X-Rspamd-Queue-Id: 8C9BB140012 X-Rspam-User: X-Stat-Signature: za9da4qt96rdkq9sjuw95d3q64x374nt X-Rspamd-Server: rspam09 X-HE-Tag: 1755781332-336691 X-HE-Meta: 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 WbKcl9Ik ilhKcq9BI997ZLLAnhScrjuP3n1l1pESYpjdnWVOkpBjsdED45u8lJed23McCDp8rvpT3lOC/wUJKHz3rA4JsiTq6ip/LIHKFjOihzR3gkMmwP1/JRXDie3+0gZvrze9H/iAVFWq7Ivp0C1NzyuIDOgd3hNmUkd7Ytm5fDkOFjPzxXpYPF7Ewb0cU7Ob4UmctHwqW8hIG+vg9oOAUsBP/QX5LQnsfOv43Q9p5FxkU3EW/9FPUuWZ+Nlsdcuioonh2eNqotNuNgZQ1ZK5lWNmZ68346GLr/zn9G9dmyoeVGKKyRfWv/ME3SfhST1So7dOLNx0NFmnX+t7Zclcroya8skUc7pEp8AObhhPVxg6vlq7mT35mcVV8uUJfou7C7Ks04Ul2 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Aug 20, 2025 at 09:24:23PM -0700, Andrew Morton wrote: >On Fri, 1 Aug 2025 17:56:25 -0400 Sasha Levin 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@lists.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. FWIW, I've switched the new RFC to use Assisted-by: as suggested by yourself and David. If you'd prefer, I can resend it with the Assisted-by tag instead. -- Thanks, Sasha