==== 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                  0xfd9cf0f84d0  P readable   P unreadable
mmap xz                0xfd9bfaa5000  P unreadable P unreadable
mmap x                 0xfd957722000  P readable   P readable  
mmap nrx               0xfd9c9fb3000  P readable   P readable  
mmap nwx               0xfd9761ea000  P readable   P readable  
mmap xnwx              0xfd9204c5000  P readable   P readable  
main                   0xfd6dee77420  P readable   P unreadable
libc                   0xfd9496cb7d0  P readable   P unreadable