==== 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                  0x8ba2985ef70  P readable   P unreadable
mmap xz                0x8ba5d531000  P unreadable P unreadable
mmap x                 0x8ba32dc2000  P readable   P readable  
mmap nrx               0x8bacbb3f000  P readable   P readable  
mmap nwx               0x8ba684eb000  P readable   P readable  
mmap xnwx              0x8b9e5b67000  P readable   P readable  
main                   0x8b7d29aa410  P readable   P unreadable
libc                   0x8b9e4c6b8e0  P readable   P unreadable