==== 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                  0x53f9f0f4da0  P readable   P unreadable
mmap xz                0x53f8a6a0000  P unreadable P unreadable
mmap x                 0x53f71644000  P readable   P readable  
mmap nrx               0x53ff0496000  P readable   P readable  
mmap nwx               0x53f7226b000  P readable   P readable  
mmap xnwx              0x53f4fd0a000  P readable   P readable  
main                   0x53d2b78c410  P readable   P unreadable
libc                   0x53fe4169a60  P readable   P unreadable