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charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.54.1 (3.54.1-1.fc41) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Sender: riel@surriel.com On Mon, 2025-01-20 at 20:56 +0200, Nadav Amit wrote: >=20 > Then in switch_mm_irqs_off(), b >=20 > if (this_cpu_read(cpu_tlbstate.pending_tlbsync)) > tlbsync(); >=20 > Note that when switch_mm_irqs_off() is called due to context switch > from=20 > context_switch(), finish_task_switch() has still not took place, so > the > task cannot be scheduled on other cores. >=20 >=20 That would certainly work. I'll add that as a separate patch, which the x86 maintainers can either accept or leave out. I'm not sure what's worse, making reclaim non-migratable, or adding an extra branch (we can probably avoid a cache line miss) to switch_mm_irqs_off. --=20 All Rights Reversed.