==== 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                  0x754fb933be0  P readable   P unreadable
mmap xz                0x755b9484000  P unreadable P unreadable
mmap x                 0x7550cb37000  P readable   P readable  
mmap nrx               0x7557dd56000  P readable   P readable  
mmap nwx               0x7559929e000  P readable   P readable  
mmap xnwx              0x75596b10000  P readable   P readable  
main                   0x752e4a03420  P readable   P unreadable
libc                   0x755ca5e6ab0  P readable   P unreadable