==== 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                   0xf2e699bac0  P readable   P unreadable
mmap xz                 0xf30a1ef000  P unreadable P unreadable
mmap x                  0xf38ede6000  P readable   P readable  
mmap nrx                0xf3440b5000  P readable   P readable  
mmap nwx                0xf39c063000  P readable   P readable  
mmap xnwx               0xf3762bd000  P readable   P readable  
main                    0xf0d9275420  P readable   P unreadable
libc                    0xf3c96796e0  P readable   P unreadable