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b=COLcWCYBFT9dd93pF5q2QEyFgZQkzG1MIG1pbKLA7Iqufd1ueWiJhww7kRKP1/Us1 7jZQ3FGx35azOG0U/OqArHOXVUnQo3ZbamsNIryLfGzHDK/A4RNwcjMtuiY/y3XyhM PJwSPxZxHNLbOAmD59sbkzC9BCcuiN3o0tGsX//fnW50q4TueRw/LsGJ4a5mrT0pmD aeUEpglPCCvC0AQLzRWBn66GHeWX98d5Wmw36HEdFxXRmKemLZA2/9Jdiw1lUnFYMR B+45sMK7yABG6VQh4p6AHeUHilH+1lpYA3VdApKKwBTyN90fxFYkkeUWLmE04v6qAs V9jXfSdWfX0tg== Date: Fri, 3 Jul 2026 16:20:37 +0300 From: Mike Rapoport To: Lorenzo Stoakes Cc: "David Hildenbrand (Arm)" , Andrew Morton , Linus Torvalds , Alexander Viro , Christian Brauner , Jan Kara , Oleg Nesterov , Peter Xu , vova tokarev , linux-kernel@vger.kernel.org, linux-mm@kvack.org, stable@vger.kernel.org Subject: Re: [PATCH] userfaultfd: prevent registration of special VMAs Message-ID: References: <20260617194059.2529406-1-rppt@kernel.org> <5a993689-f730-406d-8515-8bb6025cc851@kernel.org> <41ef0dce-e973-4947-b5e3-150fdb07f1a6@kernel.org> <11bae87d-73e6-4946-a41f-c5542fb40b75@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 5E099C0007 X-Stat-Signature: gscgo3otzici3cyw3he3k3dm5bx8yqrg X-HE-Tag: 1783084846-300418 X-HE-Meta: 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 u1xAnFnl iyzWDeq1KAGOem6xI5xaTZy84MtGm89ZQPRNplWISTvjH+8VjiKp1+1Xpcso9Ciz8qkw7AJ9gosL1Df3ML00pTDjusrMYQZqXO8ZADwF/qQyT3aqdk8UwIQwr4qVnDDtdZQDsbRwUHsvMuWspJkP54aLxJLvlkiM7t3/1Ft/C088xs/HqiNF+afsEUxGXnmDINcnPD6A1icWdaeINbms7KTZQ1lis2tL35QNqwOJGd3HWkf+Jn1tkcAW/zBf3prQ3i4rev+XirhLFp/7b0kGT5Gqn1A== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, Jul 03, 2026 at 11:11:14AM +0100, Lorenzo Stoakes wrote: > On Thu, Jun 18, 2026 at 11:37:10AM +0200, David Hildenbrand (Arm) wrote: > > > In a way that's an extra check for hugetlb, but it will work. > > > > My point would be that we exclude all special VMAs, except hugetlb (which is > > special but supported ... in its special way). > > Mike - you said you were respinning, it'd help my series if you respan the above > quickly so I could base my change on that :). I sent it already: https://lore.kernel.org/all/20260618095017.2553004-1-rppt@kernel.org and Andrew apparently ook it: https://lore.kernel.org/all/20260618183442.BBCD71F000E9@smtp.kernel.org > I can send a quick patch if you're tied up also! > > Thanks, Lorenzo -- Sincerely yours, Mike.