Public bug reported:
The upstream qemu[1] needs to pass '-cpu host' for aarch64, but current libvirt
doesn't
support to parse the parameter for aarch64, so we can see below failure when
running
the command:
ming@arm64:~/vm-new/virt$ virsh create host.xml
error: Failed to create domain from host.xml
error: unsupported configuration: CPU specification not supported by hypervisor
1, upstream qemu version
ming@arm64:~/vm-new/virt$ qemu-system-aarch64 --version
QEMU emulator version 1.7.50, Copyright (c) 2003-2008 Fabrice Bellard
2, host.xml example
<domain type="kvm">
<name>instance-000000f9</name>
<memory unit='KiB'>2048000</memory>
<currentMemory unit='KiB'>2048000</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='aarch64' machine='virt'>hvm</type>
<kernel>/home/ming/git/linux-guest/arch/arm64/boot/Image</kernel>
<cmdline>root=/dev/vda console=tty0 console=ttyS0 console=ttyAMA0
rw</cmdline>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
</features>
<cpu mode='custom' match='exact'>
<model fallback='allow'>host</model>
</cpu>
<clock offset='utc'>
<timer name='pit' tickpolicy='delay'/>
<timer name='rtc' tickpolicy='catchup'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/usr/local/bin/qemu-system-aarch64</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2' cache='none'/>
<source file='/home/ming/img/arm64-fs1.img'/>
<target dev='vda' bus='virtio'/>
<address type='virtio-mmio'/>
</disk>
<serial type='pty'>
<target port='1'/>
</serial>
</devices>
</domain>
** Affects: libvirt (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1266677
Title:
Doesn't parse cpu model for arm64
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