==== 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                  0x1e6c846ea50  P readable   P unreadable
mmap xz                0x1e624755000  P unreadable P unreadable
mmap x                 0x1e627cbf000  P readable   P readable  
mmap nrx               0x1e69ce08000  P readable   P readable  
mmap nwx               0x1e612931000  P readable   P readable  
mmap xnwx              0x1e6a7c72000  P readable   P readable  
main                   0x1e3f51d9430  P readable   P unreadable
libc                   0x1e5ff338d10  P readable   P unreadable