==== 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                  0x125445c21e0  P readable   P unreadable
mmap xz                0x1248ed5f000  P unreadable P unreadable
mmap x                 0x1255bd7c000  P readable   P readable  
mmap nrx               0x125251e0000  P readable   P readable  
mmap nwx               0x12534cad000  P readable   P readable  
mmap xnwx              0x1255034b000  P readable   P readable  
main                   0x1228d93f430  P readable   P unreadable
libc                   0x12563f10100  P readable   P unreadable