==== 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                  0x6aa2b13e8a0  P readable   P unreadable
mmap xz                0x6aaa69a5000  P unreadable P unreadable
mmap x                 0x6aab2a4f000  P readable   P readable  
mmap nrx               0x6aa40e7c000  P readable   P readable  
mmap nwx               0x6aa94d56000  P readable   P readable  
mmap xnwx              0x6aac2e72000  P readable   P readable  
main                   0x6a8245d5420  P readable   P unreadable
libc                   0x6aa2627a7d0  P readable   P unreadable