==== 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                  0x1cd4c761ff0  P readable   P unreadable
mmap xz                0x1cd58c02000  P unreadable P unreadable
mmap x                 0x1cd6ac28000  P readable   P readable  
mmap nrx               0x1cdeac4c000  P readable   P readable  
mmap nwx               0x1cdd8898000  P readable   P readable  
mmap xnwx              0x1cdfeb88000  P readable   P readable  
main                   0x1cb0d3fe420  P readable   P unreadable
libc                   0x1cdd2e3a2b0  P readable   P unreadable