Emulating an Old-World LoongArch64 VM with QEMU

LoongArch64 has an awkward bit of history: the ecosystem is often described as split between . For the kind of server images I care about here, especially KylinOS Server and UnionTech OS Server, the practical target is still old-world compatibility. That is why the firmware file matters. A newer LoongArch64 UEFI build is not automatically better for these guests. For this workflow, QEMU_EFI_7.2.fd…