Function qemu_plugin_vcpu_for_each 

pub unsafe extern "C" fn qemu_plugin_vcpu_for_each(
    id: qemu_plugin_id_t,
    cb: qemu_plugin_vcpu_simple_cb_t,
)

qemu_plugin_vcpu_for_each() - iterate over the existing vCPU @id: plugin ID @cb: callback function

The @cb function is called once for each existing vCPU.

See also: qemu_plugin_register_vcpu_init_cb()