==== 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                  0xbe529c9b0e0  P readable   P unreadable
mmap xz                0xbe569c9b000  P unreadable P unreadable
mmap x                 0xbe4b071f000  P readable   P readable  
mmap nrx               0xbe4bdf2b000  P readable   P readable  
mmap nwx               0xbe4db22e000  P readable   P readable  
mmap xnwx              0xbe4b8e36000  P readable   P readable  
main                   0xbe28ba65410  P readable   P unreadable
libc                   0xbe50c9b7890  P readable   P unreadable