==== 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                  0x9c56cafcaf0  P readable   P unreadable
mmap xz                0x9c51559a000  P unreadable P unreadable
mmap x                 0x9c4c9bb4000  P readable   P readable  
mmap nrx               0x9c4cabce000  P readable   P readable  
mmap nwx               0x9c593e76000  P readable   P readable  
mmap xnwx              0x9c57110a000  P readable   P readable  
main                   0x9c2b1b60420  P readable   P unreadable
libc                   0x9c5a7363a50  P readable   P unreadable