The qemu default is quite small - 128MB - so may be unsuitable on many
architectures even though we are only booting a kernel and trivial
initrd. It's better to set this to something more normal, and in case
we don't use the extra RAM it won't make any difference.
timeout=10m
accel=kvm:tcg
cpu=
+memory=768
machine=
# Both libguestfs and virt-manager choose cpu=host when we think that
argv[$((i++))]="-cpu"
argv[$((i++))]="$cpu"
fi
+argv[$((i++))]="-m"
+argv[$((i++))]="$memory"
argv[$((i++))]="-no-reboot"
argv[$((i++))]="-serial"
argv[$((i++))]="file:$test_output"