==== 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                  0x6c10e18bc00  P readable   P unreadable
mmap xz                0x6c0f5c51000  P unreadable P unreadable
mmap x                 0x6c10074e000  P readable   P readable  
mmap nrx               0x6c1075e6000  P readable   P readable  
mmap nwx               0x6c1060bc000  P readable   P readable  
mmap xnwx              0x6c116a6a000  P readable   P readable  
main                   0x6be8c861430  P readable   P unreadable
libc                   0x6c095a140b0  P readable   P unreadable