==== 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                  0x15eea5cd790  P readable   P unreadable
mmap xz                0x15ec24d2000  P unreadable P unreadable
mmap x                 0x15f1e3d4000  P readable   P readable  
mmap nrx               0x15f34128000  P readable   P readable  
mmap nwx               0x15f3d97e000  P readable   P readable  
mmap xnwx              0x15f01dc4000  P readable   P readable  
main                   0x15c5f50b420  P readable   P unreadable
libc                   0x15e7c172400  P readable   P unreadable