VHOST_USER_PROTOCOL_F_REPLY_ACK   25 arch/um/drivers/vhost_user.h #define VHOST_USER_SUPPORTED_PROTOCOL_F	(BIT_ULL(VHOST_USER_PROTOCOL_F_REPLY_ACK) | \
VHOST_USER_PROTOCOL_F_REPLY_ACK  187 arch/um/drivers/virtio_uml.c 			BIT_ULL(VHOST_USER_PROTOCOL_F_REPLY_ACK)))