==== 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                  0x141c69ebd10  P readable   P unreadable
mmap xz                0x141da0a8000  P unreadable P unreadable
mmap x                 0x1415a55a000  P readable   P readable  
mmap nrx               0x14165c81000  P readable   P readable  
mmap nwx               0x14162bf3000  P readable   P readable  
mmap xnwx              0x141a5d17000  P readable   P readable  
main                   0x13f34b48420  P readable   P unreadable
libc                   0x141d42d6c40  P readable   P unreadable