==== run-regress-xonly ====
cc -O2 -pipe  -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                  0xa68a9d7c9f0  P readable   P unreadable
mmap xz                0xa6882830000  P unreadable P unreadable
mmap x                 0xa68a6d93000  P readable   P readable  
mmap nrx               0xa68ae1b9000  P readable   P readable  
mmap nwx               0xa67cfe83000  P readable   P readable  
mmap xnwx              0xa6801139000  P readable   P readable  
main                   0xa65b5d0d430  P readable   P unreadable
libc                   0xa685cfe1be0  P readable   P unreadable