==== 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                  0x13c7ba31100  P readable   P unreadable
mmap xz                0x13ce1177000  P unreadable P unreadable
mmap x                 0x13c79eac000  P readable   P readable  
mmap nrx               0x13c910c5000  P readable   P readable  
mmap nwx               0x13cf9b57000  P readable   P readable  
mmap xnwx              0x13c50c16000  P readable   P readable  
main                   0x13a02254410  P readable   P unreadable
libc                   0x13c87c405b0  P readable   P unreadable