==== 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                  0x2716f7cc000  P readable   P unreadable
mmap xz                0x271eb525000  P unreadable P unreadable
mmap x                 0x27187d94000  P readable   P readable  
mmap nrx               0x271a45a7000  P readable   P readable  
mmap nwx               0x271157d8000  P readable   P readable  
mmap xnwx              0x2719c5a1000  P readable   P readable  
main                   0x26f0ee24420  P readable   P unreadable
libc                   0x27167bcee40  P readable   P unreadable