Comment 2 for bug 1890290

As per this the table https://www.qemu.org/docs/master/specs/ppc-spapr-xive.html#kvm-negotiation

reported qemu error msg "KVM is too old to support ic-mode=dual,kernel-irqchip=on" indicates the
guest os is legacy, but that's not the case here, whereas kernel levels are near upstream which has support for xive.

My understanding of the env I used as below

Level | XIVE KVM support | XIVE support(in kernel or emulation)
--------------------------------------------------
 L0 | Yes | Yes
 L1 | No | Yes(booted with irqchip: in-kernel)
 L2 | No | Yes

So, ideally when a L2 guest is started with ic-mode=dual,kernel-irqchip=on, we should have seen below error
(2) QEMU fails with ``kernel_irqchip requested but unavailable:
    IRQ_XIVE capability must be present for KVM``

but we actually saw the reported one, which is misleading.