Re: [PATCH v4 35/49] KVM: arm64: GICv3: nv: Plug L1 LR sync into deactivation primitive

Darren Hart
2026-04-24T00:02:47Z

On Wed, Apr 22, 2026 at 07:55:56AM +0100, Marc Zyngier wrote:
> [+ Darren]
>

Thanks for the head's up Marc.

> On Tue, 31 Mar 2026 10:42:57 +0100,
> Marc Zyngier <maz@kernel.org> wrote:
> > >

...

> > > Although this behavior is puzzling, it matches the trace I typically
> > > observe on L0. After reverting the patch, I was able to boot L2 guests
> > > successfully.
> >
> > Well, this patch fixes real bugs, so it isn't going anywhere.

Understood.

>
> Have you made progress on this? I can't reproduce it at all despite my
> best effort. I'm perfectly happy to help, but you need to give me
> *something* to go on.
>

I didn't give this the attention it deserved. I've now got Vishnu the
resources he needs to help move this forward. We owe you something
concrete/actionable/reproducible and we'll report back once we have it.

--
Darren Hart
Ampere Computing / Linux Enabling