==== 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                  0xcbb61e49c00  P readable   P unreadable
mmap xz                0xcbb4f4e3000  P unreadable P unreadable
mmap x                 0xcbb59d18000  P readable   P readable  
mmap nrx               0xcbbdd7ec000  P readable   P readable  
mmap nwx               0xcbbc537a000  P readable   P readable  
mmap xnwx              0xcbb71a6b000  P readable   P readable  
main                   0xcb91bd9a420  P readable   P unreadable
libc                   0xcbba20e0410  P readable   P unreadable