==== 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                  0x1890401efe0  P readable   P unreadable
mmap xz                0x18889018000  P unreadable P unreadable
mmap x                 0x18819c47000  P readable   P readable  
mmap nrx               0x1885a9ef000  P readable   P readable  
mmap nwx               0x18826463000  P readable   P readable  
mmap xnwx              0x188c9ca5000  P readable   P readable  
main                   0x186146f9430  P readable   P unreadable
libc                   0x188ee06d1a0  P readable   P unreadable