==== 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                  0xa466f4819f0  P readable   P unreadable
mmap xz                0xa4672ce2000  P unreadable P unreadable
mmap x                 0xa46f6d80000  P readable   P readable  
mmap nrx               0xa46b98d1000  P readable   P readable  
mmap nwx               0xa462e951000  P readable   P readable  
mmap xnwx              0xa469a231000  P readable   P readable  
main                   0xa440ed69410  P readable   P unreadable
libc                   0xa460f3fb370  P readable   P unreadable