==== 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                  0x2cec502fcf0  P readable   P unreadable
mmap xz                0x2cf3843b000  P unreadable P unreadable
mmap x                 0x2cf68d39000  P readable   P readable  
mmap nrx               0x2cf29e46000  P readable   P readable  
mmap nwx               0x2ceae1c6000  P readable   P readable  
mmap xnwx              0x2cf4892d000  P readable   P readable  
main                   0x2cc95da8420  P readable   P unreadable
libc                   0x2cf090daee0  P readable   P unreadable