Re: [PATCH 3/3] irq/affinity: Fix a possible breakage

From: Thomas Gleixner
Date: Wed Dec 05 2018 - 03:29:00 EST


On Tue, 4 Dec 2018, Dou Liyang wrote:

> In case of irq_default_affinity != cpu_possible_mask, setting the affinity
> for the pre/post vectors to irq_default_affinity is a breakage.

Why so? All interrupts which are not managed get te default affinity
mask. It can be different than cpu_possible_mask, but that's what the admin
has set. The affinity of these non-managed interrupts can still be set via
/proc/... so where is the breakage?

Thanks,

tglx