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Daniel Hilst
f59aceb0df
guest_arch_profile() gave every aarch64 guest domain type qemu and the cortex-a57 CPU model, so an aarch64 hypervisor ran its own guests under emulation. The profile now reads both architectures: an aarch64 guest on an aarch64 hypervisor is a kvm domain with CPU mode host-passthrough, which is the only CPU KVM runs on ARM, and every other hypervisor keeps the emulated case with the custom cortex-a57 model. build_xmldesc() read the hypervisor cpumodel alone for the CPU model, the CPU topology and the qemu-system-ppc64 emulator, so an aarch64 guest on a POWER hypervisor received a POWER CPU model, a pseries topology and a ppc64 emulator. The profile now marks a pseries guest and those three settings follow the mark. libvirt resolves the emulator of an ARM guest from its own capabilities. A cpumode from vm.othersettings reached a domain of either type. Both host-passthrough and host-model read the host CPU, which an emulated guest does not run, and libvirt reports both as unsupported for an emulated aarch64 domain. An explicit mode now reaches a kvm domain only. The video model is virtio, as it is for a riscv64 virt guest. The aarch64 virt machine supports virtio video; the earlier refusal came from an emulator build with no virtio-gpu device. kvm_guest_arch.t covers the four host and guest pairs and the explicit CPU modes. Ten of its assertions fail without this change. Signed-off-by: Daniel Hilst <392820+dhilst@users.noreply.github.com>