==== 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                  0xf3141a2f4d0  P readable   P unreadable
mmap xz                0xf3106fc5000  P unreadable P unreadable
mmap x                 0xf306c8c7000  P readable   P readable  
mmap nrx               0xf3067f77000  P readable   P readable  
mmap nwx               0xf30ee5ca000  P readable   P readable  
mmap xnwx              0xf30ddeb6000  P readable   P readable  
main                   0xf2e41d9a420  P readable   P unreadable
libc                   0xf30e61028c0  P readable   P unreadable