==== 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                  0xe3535e28440  P readable   P unreadable
mmap xz                0xe35ad0c2000  P unreadable P unreadable
mmap x                 0xe35fbf69000  P readable   P readable  
mmap nrx               0xe35f38d2000  P readable   P readable  
mmap nwx               0xe357bcc4000  P readable   P readable  
mmap xnwx              0xe355fef5000  P readable   P readable  
main                   0xe3315528420  P readable   P unreadable
libc                   0xe3527ace7c0  P readable   P unreadable