==== 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                  0xca23d0afe40  P readable   P unreadable
mmap xz                0xca24c095000  P unreadable P unreadable
mmap x                 0xca2574a1000  P readable   P readable  
mmap nrx               0xca20b8ed000  P readable   P readable  
mmap nwx               0xca2b3568000  P readable   P readable  
mmap xnwx              0xca2613b2000  P readable   P readable  
main                   0xc9fbc47b410  P readable   P unreadable
libc                   0xca25fe20f00  P readable   P unreadable