==== 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                  0x679d714d390  P readable   P unreadable
mmap xz                0x67a4fb1b000  P unreadable P unreadable
mmap x                 0x67acbc2d000  P readable   P readable  
mmap nrx               0x67a1cf8b000  P readable   P readable  
mmap nwx               0x67a0ee16000  P readable   P readable  
mmap xnwx              0x67a7608c000  P readable   P readable  
main                   0x677d0c63420  P readable   P unreadable
libc                   0x67a33e60b00  P readable   P unreadable