==== 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                  0xe6632cc8d70  P readable   P unreadable
mmap xz                0xe663a1fc000  P unreadable P unreadable
mmap x                 0xe66a8673000  P readable   P readable  
mmap nrx               0xe6625f22000  P readable   P readable  
mmap nwx               0xe65e0248000  P readable   P readable  
mmap xnwx              0xe661242e000  P readable   P readable  
main                   0xe63b3bd5420  P readable   P unreadable
libc                   0xe6622725ae0  P readable   P unreadable