==== 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                  0xa4aac3051c0  P readable   P unreadable
mmap xz                0xa4b95c05000  P unreadable P unreadable
mmap x                 0xa4b1b361000  P readable   P readable  
mmap nrx               0xa4af5137000  P readable   P readable  
mmap nwx               0xa4b28b48000  P readable   P readable  
mmap xnwx              0xa4b3c312000  P readable   P readable  
main                   0xa48a4efd410  P readable   P unreadable
libc                   0xa4b7532a480  P readable   P unreadable