==== 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                  0xe6eb70014b0  P readable   P unreadable
mmap xz                0xe6eae4a9000  P unreadable P unreadable
mmap x                 0xe6efa9fb000  P readable   P readable  
mmap nrx               0xe6e36508000  P readable   P readable  
mmap nwx               0xe6ec57c2000  P readable   P readable  
mmap xnwx              0xe6e17ab5000  P readable   P readable  
main                   0xe6bfeec7420  P readable   P unreadable
libc                   0xe6e05545920  P readable   P unreadable