[libvirt] Why "integratorcp" as the default machine type for ARM / AArch64?

Hi I see in the following change, Dan added the default machine types for all architectures: https://libvirt.org/git/?p=libvirt.git;a=commitdiff;h=26cfb1a3 ("qemu: ensure default machine types don't change if QEMU changes") What caught my eye was the default machine type chosen ("integratorcp") for ARM / AAarch64: + [VIR_ARCH_ARMV7L] = "integratorcp", + [VIR_ARCH_ARMV7B] = "integratorcp", + + [VIR_ARCH_AARCH64] = "integratorcp", I thought the default for AArch64 / ARM would be 'virt'---as I learnt that upstream QEMU explicitly designed the 'virt' board for ARM / AArch64-based machine machines (because it supports PCI, 'virtio', has decent RAM limits, etc.) So, shouldn't the default for the above be changed from "integratorcp" to "virt"? PS: I thought "integratorcp" board was picked as it was probably the first entry when you run `qemu-system-aarch64 -machine help`, but that wasn't the case on my Fedora-28 machine---it was the 12th entry. -- /kashyap