Subject: Re: [PATCH 2/2] irqchip/gic-v3-its: Use GFP_ATOMIC_RT gfp flag in allocate_vpe_l1_table()

From: Lorenzo Stoakes <[email-masked]>
Date: Fri, 22 May 2026 10:06:42 +0100

On Fri, May 22, 2026 at 09:17:35AM +0100, Marc Zyngier wrote:
> On Wed, 20 May 2026 21:46:28 +0100,
> Waiman Long <[email-masked]> wrote:
> >
> > A longer term solution is to defer the allocation to a later stage of the
> > hotplug pipeline where interrupt isn't disabled.
>
> And that's what needs doing. Not papering over this in a bizarre way.
> I proposed a potential solution a few months back, but didn't get a
> chance to work on it. If you have the bandwidth, that's the way to go.
>
> But papering over this issue this way seems like a bad case of short
> term and unsustainable hack.

Yes, agreed. It really smacks of trying the fix the problem at the wrong level
of abstraction.

>
> Thanks,
>
> 	M.
>
> --
> Without deviation from the norm, progress is not possible.

Cheers, Lorenzo