==== 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                  0xf29e43c7b30  P readable   P unreadable
mmap xz                0xf2a33425000  P unreadable P unreadable
mmap x                 0xf2a01fdb000  P readable   P readable  
mmap nrx               0xf29ff4e5000  P readable   P readable  
mmap nwx               0xf2a1122f000  P readable   P readable  
mmap xnwx              0xf29e5ba8000  P readable   P readable  
main                   0xf274ddef410  P readable   P unreadable
libc                   0xf29c31120d0  P readable   P unreadable