==== 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                  0x3d3a7be87e0  P readable   P unreadable
mmap xz                0x3d4093a6000  P unreadable P unreadable
mmap x                 0x3d38f1fb000  P readable   P readable  
mmap nrx               0x3d3b9f11000  P readable   P readable  
mmap nwx               0x3d33bda4000  P readable   P readable  
mmap xnwx              0x3d3fb27c000  P readable   P readable  
main                   0x3d11d164420  P readable   P unreadable
libc                   0x3d3b7497220  P readable   P unreadable