KVM can be used without vhost so add a new option to runqemu for
use kvm with vhost.
Example,
runqemu qemux86 core-image-minimal kvm # kvm without vhost
runqemu qemux86 core-image-minimal kvm-vhost # kvm with vhost
[YOCTO #7443]
(From OE-Core rev: 7f5f8f87a4180a2b05188047c6a05da5571f94e2)
Signed-off-by: Aníbal Limón <anibal.limon@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>