==== 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                  0xf1badad6d80  P readable   P unreadable
mmap xz                0xf1bd576a000  P unreadable P unreadable
mmap x                 0xf1bf10a6000  P readable   P readable  
mmap nrx               0xf1c033c8000  P readable   P readable  
mmap nwx               0xf1bcef82000  P readable   P readable  
mmap xnwx              0xf1c5ca73000  P readable   P readable  
main                   0xf19673f6430  P readable   P unreadable
libc                   0xf1bf4d4d340  P readable   P unreadable