Re: selftests: kvm: irqfd_test: KVM_IRQFD failed, rc: -1 errno: 11 (Resource temporarily unavailable)

On Tue, Sep 30, 2025, Naresh Kamboju wrote:

The selftests: kvm: irqfd_test consistently fails across all test platforms since its introduction in Linux next-20250625. The failure occurs due to a KVM_IRQFD ioctl returning errno 11 (Resource temporarily unavailable). This has been observed from day one and is reproducible on all test runs.

It's a known issue[*], that I think we kinda forgot about. The underlying issue is that KVM ARM needs the test to create a vGIC, but the fix stalled out a bit because there isn't one single, "obviously correct" way to do that.

I'll Cc you and ping Oliver on the other thread.

[*] https://lore.kernel.org/all/20250825155203.71989-1-sebott@redhat.com