==== run-regress-xonly ====
cc -O2 -pipe  -g -Wall -Wpointer-arith -Wuninitialized -Wstrict-prototypes -Wmissing-prototypes -Wunused -Wsign-compare -Wshadow  -MD -MP  -c /home/src/regress/sys/kern/xonly/xonly.c
cc   -o xonly xonly.o 
./xonly
                                      userland     kernel
ld.so                  0xbe39ee8e890  P readable   P unreadable
mmap xz                0xbe3281ae000  P unreadable P unreadable
mmap x                 0xbe3a6a31000  P readable   P readable  
mmap nrx               0xbe325351000  P readable   P readable  
mmap nwx               0xbe3a7c58000  P readable   P readable  
mmap xnwx              0xbe321747000  P readable   P readable  
main                   0xbe11da83420  P readable   P unreadable
libc                   0xbe349a9d6f0  P readable   P unreadable