==== 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                  0xadc8b7886f0  P readable   P unreadable
mmap xz                0xadd26737000  P unreadable P unreadable
mmap x                 0xadd7c26e000  P readable   P readable  
mmap nrx               0xadd7b4fb000  P readable   P readable  
mmap nwx               0xadd2b502000  P readable   P readable  
mmap xnwx              0xadd6295f000  P readable   P readable  
main                   0xada83e24420  P readable   P unreadable
libc                   0xadcc0558980  P readable   P unreadable