==== 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                  0xc5e4b181280  P readable   P unreadable
mmap xz                0xc5e39ef6000  P unreadable P unreadable
mmap x                 0xc5e192b0000  P readable   P readable  
mmap nrx               0xc5e02e84000  P readable   P readable  
mmap nwx               0xc5ed4ce0000  P readable   P readable  
mmap xnwx              0xc5e7e4ff000  P readable   P readable  
main                   0xc5bf8322420  P readable   P unreadable
libc                   0xc5e067efbf0  P readable   P unreadable