Add #ifndef MAX_QUEUES to change MAX_QUEUES at compile time if needed. Change MAX_QUEUES from 512 to 128 to reduce the number of hugepages required by the vhost-switch program. To change MAX_QUEUES add '-D MAX_QUEUES=512' to the EXTRA_CFLAGS variable, before building the application. Signed-off-by: Bernard Iremonger <bernard.iremonger@intel.com> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>