==== 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                  0x2560eac47e0  P readable   P unreadable
mmap xz                0x256fe464000  P unreadable P unreadable
mmap x                 0x2564dd81000  P readable   P readable  
mmap nrx               0x257078b1000  P readable   P readable  
mmap nwx               0x2563ed13000  P readable   P readable  
mmap xnwx              0x256466bd000  P readable   P readable  
main                   0x254086d8420  P readable   P unreadable
libc                   0x256445b3080  P readable   P unreadable