==== 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                  0xdf4578317c0  P readable   P unreadable
mmap xz                0xdf50f8b1000  P unreadable P unreadable
mmap x                 0xdf48ce89000  P readable   P readable  
mmap nrx               0xdf4d6855000  P readable   P readable  
mmap nwx               0xdf47584f000  P readable   P readable  
mmap xnwx              0xdf4ecc18000  P readable   P readable  
main                   0xdf21e748420  P readable   P unreadable
libc                   0xdf438c965c0  P readable   P unreadable