==== 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                  0x8a8f8c3e8b0  P readable   P unreadable
mmap xz                0x8a8b89c7000  P unreadable P unreadable
mmap x                 0x8a83cf17000  P readable   P readable  
mmap nrx               0x8a895f80000  P readable   P readable  
mmap nwx               0x8a89281e000  P readable   P readable  
mmap xnwx              0x8a8d6f18000  P readable   P readable  
main                   0x8a613b7c420  P readable   P unreadable
libc                   0x8a8a3912470  P readable   P unreadable