Confuse error message in virtio_init_region_cache()
This bug has been copied automatically from: https://bugs.launchpad.net/qemu/+bug/1919021
Reported by 'Philippe Mathieu-Daudé' on 2021-03-13 :
The error message added in commit e45da653223 to virtio_init_region_cache() are somehow confuse: qemu-system-i386: Cannot map used It would be helpful to more explicit string, including "virtio" prefix.