==== 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                  0x6233ec2d9c0  P readable   P unreadable
mmap xz                0x622c30b2000  P unreadable P unreadable
mmap x                 0x6231d951000  P readable   P readable  
mmap nrx               0x6231c66f000  P readable   P readable  
mmap nwx               0x622c24db000  P readable   P readable  
mmap xnwx              0x622f17a2000  P readable   P readable  
main                   0x620c1fc9420  P readable   P unreadable
libc                   0x622c83b74e0  P readable   P unreadable