Re: [PATCH 14/25] genirq: Update request_percpu_nmi() to take an affinity
From: Thomas Gleixner <hidden>
Date: 2025-09-09 09:45:39
Also in:
linux-acpi, lkml
On Mon, Sep 08 2025 at 17:31, Marc Zyngier wrote:
quoted hunk ↗ jump to hunk
@@ -2564,13 +2566,14 @@ int request_percpu_nmi(unsigned int irq, irq_handler_t handler, !irq_supports_nmi(desc)) return -EINVAL; - /* The line cannot already be NMI */ - if (irq_is_nmi(desc)) + /* The line cannot be NMI already if the new request covers all CPUs */ + if (irq_is_nmi(desc) && + (!affinity || cpumask_equal(affinity, cpu_possible_mask))) return -EINVAL;
This check looks odd. What makes sure that the affinities do not
overlap?
Thanks,
tglx