Re: [PATCH] KVM: arm64: Skip interrupts in LRs during EOIcount replay

From: Valentine Burley

Date: Sat Mar 07 2026 - 13:29:36 EST


Hi Marc,

Thanks a lot for your reply.

On Sat, 07 Mar 2026 17:33:08 +0100 Marc Zyngier <maz@xxxxxxxxxx> wrote
> I can't reproduce it locally, but in a crap integration, where the GIC
> is clocked at a few dozen MHz, this is far more likely to happen. I
> should dig that Lazor out of the bin and put it back in the test rig.
>
> In retrospect, it is obvious. I just couldn't see it until then. Many
> thanks for going the extra mile and pointing out the core issue.

Appreciate the clarification!

We also have a few Lazor boards in our CI, and the Trogdors are indeed
legendary for hitting all kinds of edge cases.

<snip>

> Could you please give the hack below a go on your setup? It seems to
> work for me, but given that I never observed the issue the first
> place...

I've tested this on my sc7180 Trogdor setup, and it completely
resolves the issue. The Cuttlefish VM now boots reliably.

Tested-by: Valentine Burley <valentine.burley@xxxxxxxxxxxxx>

Many thanks for the quick solution!

Best regards,
Valentine