==== 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                  0xa5fe9c1bc70  P readable   P unreadable
mmap xz                0xa5fc2f5c000  P unreadable P unreadable
mmap x                 0xa6038591000  P readable   P readable  
mmap nrx               0xa5fa3c8f000  P readable   P readable  
mmap nwx               0xa5fdba90000  P readable   P readable  
mmap xnwx              0xa607c62e000  P readable   P readable  
main                   0xa5d7e15f420  P readable   P unreadable
libc                   0xa5fa93885d0  P readable   P unreadable