==== 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                   0x6e6fae8a90  P readable   P unreadable
mmap xz                 0x6e78adc000  P unreadable P unreadable
mmap x                  0x6ec7d7f000  P readable   P readable  
mmap nrx                0x6e67dc4000  P readable   P readable  
mmap nwx                0x6f08020000  P readable   P readable  
mmap xnwx               0x6f526f2000  P readable   P readable  
main                    0x6c5324e420  P readable   P unreadable
libc                    0x6e709ebeb0  P readable   P unreadable