==== 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                  0xf2daddf59e0  P readable   P unreadable
mmap xz                0xf2dc0093000  P unreadable P unreadable
mmap x                 0xf2d1b585000  P readable   P readable  
mmap nrx               0xf2d89938000  P readable   P readable  
mmap nwx               0xf2d47298000  P readable   P readable  
mmap xnwx              0xf2cdcff1000  P readable   P readable  
main                   0xf2acf447410  P readable   P unreadable
libc                   0xf2d36119360  P readable   P unreadable