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 lf0a/CZ1 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 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: Peter Zijlstra writes: > On Mon, Jun 16, 2025 at 07:44:13AM -0700, Dave Hansen wrote: > >> To me, that's deserving of an ARCH_HAS_FOO bit that we can set on the >> x86 side that then cajoles the core mm/ code to use the fancy new >> clear_pages_resched() implementation. > > Note that we should only set this bit with either full or lazy > preemption selected. Haven't checked the patch-set to see if that > constraint is already taken care of. It is. I check for preempt_model_preemptible() and limit voluntary models to chunk sizes of 8MB. -- ankur