==== 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                  0x18f2633d930  P readable   P unreadable
mmap xz                0x18f59c18000  P unreadable P unreadable
mmap x                 0x18ec7789000  P readable   P readable  
mmap nrx               0x18f1cfd2000  P readable   P readable  
mmap nwx               0x18f07c3f000  P readable   P readable  
mmap xnwx              0x18f379b2000  P readable   P readable  
main                   0x18cc6f45410  P readable   P unreadable
libc                   0x18f348e5540  P readable   P unreadable