==== 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                  0x4a29cca8df0  P readable   P unreadable
mmap xz                0x4a256017000  P unreadable P unreadable
mmap x                 0x4a28d3dc000  P readable   P readable  
mmap nrx               0x4a255eaf000  P readable   P readable  
mmap nwx               0x4a2be681000  P readable   P readable  
mmap xnwx              0x4a2338a6000  P readable   P readable  
main                   0x49ff059b410  P readable   P unreadable
libc                   0x4a2a3cc8380  P readable   P unreadable