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Peter Anvin" , Paolo Bonzini , Wanpeng Li , Vitaly Kuznetsov , Andy Lutomirski , Frederic Weisbecker , "Paul E. McKenney" , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Boqun Feng , Mathieu Desnoyers , Lai Jiangshan , Zqiang , Andrew Morton , Uladzislau Rezki , Christoph Hellwig , Lorenzo Stoakes , Jason Baron , Kees Cook , Sami Tolvanen , Ard Biesheuvel , Nicholas Piggin , Juerg Haefliger , Nicolas Saenz Julienne , "Kirill A. Shutemov" , Nadav Amit , Dan Carpenter , Chuang Wang , Yang Jihong , Petr Mladek , "Jason A. Donenfeld" , Song Liu , Julian Pidancet , Tom Lendacky , Dionna Glaze , Thomas =?iso-8859-1?Q?Wei=DFschuh?= , Juri Lelli , Marcelo Tosatti , Yair Podemsky , Daniel Wagner , Petr Tesarik Subject: Re: [RFC PATCH v3 06/15] jump_label: Add forceful jump label type Message-ID: <20241120145746.GL38972@noisy.programming.kicks-ass.net> References: <20241119153502.41361-1-vschneid@redhat.com> <20241119153502.41361-7-vschneid@redhat.com> <20241119233902.kierxzg2aywpevqx@jpoimboe> <20241120145649.GJ19989@noisy.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241120145649.GJ19989@noisy.programming.kicks-ass.net> X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: E9F0940005 X-Stat-Signature: kgyadjhm1aqndcutzjyqehej3pye5gb1 X-HE-Tag: 1732114629-7798 X-HE-Meta: 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 s6t5ecco hpmDyAKrMAhsOW7A+6Wu9zvBodx94vi7JVDqzkiJ+AWuWHtX2AdbNOjbCk9z+07nCr56ZsYAsvbcA2aGc3IjeOCtFEcS4MGPaaS6cgXB8j/qt/Q9hxKzYBGe/oF1jmdZ/trTCWq4jh+bz2xMb2nFJIyoWSPZ0EaxDUeN3qmmQG5iI6JPMrY3l24eeiYAtCWa6v/JqocEX16wM3Z34FrobLSp70HbXNWXQhAElXTl/mE9VUYSVnQ4PmGIDUtWt7lHC/arpFKOsuTzaDdJVB7BxVQjjMld2PSOfI1ldbTr+tdXqbJ3FtkMYAaeKdQ== 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, Nov 20, 2024 at 03:56:49PM +0100, Peter Zijlstra wrote: > But I think we can make the fall-back safer, we can simply force the IPI > when we poke at noinstr code -- then NOHZ_FULL gets to keep the pieces, > but at least we don't violate any correctness constraints. I should have read more; that's what is being proposed.