How to fix Emulator: qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.abm [bit 5]

Question

I have this message in the console, which did not appear before formatting the computer.

Ubuntu 18.04, Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz, cpu_cores: 4
8GB Ram, qemu-kvm x86_64.

Emulator: qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.abm [bit 5]

Answer 1

I had the same problem on MacOS. Adding -cpu host to qemu-system-x86_64 solved it.

For example:

qemu-system-x86_64 -m 4000 -vga virtio -accel hvf -usb -device usb -tablet -drive file=ubuntu.qcow2,if=virtio -cpu host

Solution found on github here.