==== 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                  0x75b2f18ef40  P readable   P unreadable
mmap xz                0x75b5af5a000  P unreadable P unreadable
mmap x                 0x75b77d7e000  P readable   P readable  
mmap nrx               0x75b2680c000  P readable   P readable  
mmap nwx               0x75b1a673000  P readable   P readable  
mmap xnwx              0x75b1c76b000  P readable   P readable  
main                   0x758f1005420  P readable   P unreadable
libc                   0x75af552a340  P readable   P unreadable