==== 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                  0x895689a0500  P readable   P unreadable
mmap xz                0x89577c40000  P unreadable P unreadable
mmap x                 0x895ce4d0000  P readable   P readable  
mmap nrx               0x89567e57000  P readable   P readable  
mmap nwx               0x895b245b000  P readable   P readable  
mmap xnwx              0x8952b0b5000  P readable   P readable  
main                   0x892e396d420  P readable   P unreadable
libc                   0x895a376a030  P readable   P unreadable