==== 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                  0x6e49c51a6b0  P readable   P unreadable
mmap xz                0x6e4e16d3000  P unreadable P unreadable
mmap x                 0x6e4b3af3000  P readable   P readable  
mmap nrx               0x6e491843000  P readable   P readable  
mmap nwx               0x6e528e4b000  P readable   P readable  
mmap xnwx              0x6e4669f6000  P readable   P readable  
main                   0x6e2457d0410  P readable   P unreadable
libc                   0x6e509b52e60  P readable   P unreadable