==== 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                  0xfb5f3d73d50  P readable   P unreadable
mmap xz                0xfb66288f000  P unreadable P unreadable
mmap x                 0xfb675482000  P readable   P readable  
mmap nrx               0xfb67c33e000  P readable   P readable  
mmap nwx               0xfb62221f000  P readable   P readable  
mmap xnwx              0xfb5c7494000  P readable   P readable  
main                   0xfb3ab10e420  P readable   P unreadable
libc                   0xfb637381100  P readable   P unreadable