==== 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                  0x872b11d70f0  P readable   P unreadable
mmap xz                0x872aab5b000  P unreadable P unreadable
mmap x                 0x87291c2b000  P readable   P readable  
mmap nrx               0x873399a0000  P readable   P readable  
mmap nwx               0x8731e3eb000  P readable   P readable  
mmap xnwx              0x8726233a000  P readable   P readable  
main                   0x87042cf4410  P readable   P unreadable
libc                   0x872e52a0d10  P readable   P unreadable