NUMA node binding are not supported by qemu
qemu-system-x86_64 -name guest=cirros,debug-threads=on -S
I got the following error: "NUMA node binding are not supported by this QEMU".
apk add qemu-system-x86_64
It appears that the package qemu-system-x86_64 was built without CONFIG_NUMA being defined. After installing numactl-dev and building qemu-system-x86_64 from source code, the error was gone.