Re: [PATCH v2 1/3] genirq/affinity: Add irq_update_affinity_desc()

From: Thomas Gleixner
Date: Mon Nov 02 2020 - 15:35:27 EST


On Mon, Nov 02 2020 at 17:32, John Garry wrote:
> On 28/10/2020 18:22, Thomas Gleixner wrote:
>> But all of this can't work on x86 due to the way how vector allocation
>> works. Let me think about that.
>
> Is the problem that we reserve per-cpu managed interrupt space when
> allocated irq vectors on x86, and so later changing managed vs
> non-managed setting for irqs messes up this accounting somehow?

Correct. I have a halfways working solution for that, but I need to fix
some other thing first.

Thanks,

tglx