==== 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                  0x3d088c67d20  P readable   P unreadable
mmap xz                0x3d11bff6000  P unreadable P unreadable
mmap x                 0x3d0701cd000  P readable   P readable  
mmap nrx               0x3d164e32000  P readable   P readable  
mmap nwx               0x3d12ba20000  P readable   P readable  
mmap xnwx              0x3d0789d9000  P readable   P readable  
main                   0x3ce67744420  P readable   P unreadable
libc                   0x3d1361e9dd0  P readable   P unreadable