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b=f8fCfwFh4Z1og95qFf//8M53G5+NpB0yLPawo58P+nEJ33AB0QDoMmwRNquGqfk1S tsu4nuflWvmc2k2+b/tD4Yo2VUE6pT7IUR7ZuBev1amEvdmaRaGakAhitSeYTBEzes Yn3DvWs4xjELaW3Hr13oWRpJRwYQUcg2i4cxPTps= Date: Wed, 20 Aug 2025 21:24:23 -0700 From: Andrew Morton To: Sasha Levin 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: <20250820212423.fbac2b17eb4f6a9667a8c979@linux-foundation.org> In-Reply-To: References: <20250731144431.773923-1-sashal@kernel.org> <20250801141101.9f3555a172609cb64fde7f71@linux-foundation.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Stat-Signature: i9ixmsmz1uunz5uic39gyswuk6dr66kf X-Rspam-User: X-Rspamd-Queue-Id: 7A9D81C0006 X-Rspamd-Server: rspam01 X-HE-Tag: 1755750265-987369 X-HE-Meta: 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 Pt/pbsZK Jq4TztPH586nooSUoJW+2RbJDZf8NNx/UShM6JCdoYDLsX97b5E7uDlP3T8pep0AfGptt26tOgVPvhmgbG/lFBcLOeOm1xzjKcT0AW9+/CJtqJh88Go8X3ys5SBD194GAef7ZGG9E5d8XBNDE2eZL4PNQ6+yGFg0UpAcVooSBlNR6dgqaIoEJCDuYFugOsvldelfJCh8mdoxTiAtDTG/yhVHRsw0dmOe8qL6g5o1A8y+P/lglMFvEBRl8yzYDkC8DMPsap5UpujoO9R/8r2qTEhqNIqyZ0Ds3wQ5pz3jR9tzqDGHcrtrb0icKhxztOLK3XwL0tQxsGDsfFEFb0MZsBd3YUA== 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 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.