==== 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                  0xa84f61b8c30  P readable   P unreadable
mmap xz                0xa84dab9d000  P unreadable P unreadable
mmap x                 0xa84e1094000  P readable   P readable  
mmap nrx               0xa84e5770000  P readable   P readable  
mmap nwx               0xa84a4e91000  P readable   P readable  
mmap xnwx              0xa84aac8b000  P readable   P readable  
main                   0xa8214b57410  P readable   P unreadable
libc                   0xa84de2317d0  P readable   P unreadable