Whats the real penalty of non-mmap ggc?

[Kean Johnston]

> Ideally, though, you would find some chunk of address space that is
> always free on your OS and just use that with mmap; that's pretty much
> guaranteed to be faster and more reliable.

Aha thanks. I looked at host-linux.c and adapted its
gt_pch_get_address to taste, added that to host-sco.c
and now all the tests pass. Thanks for the pointer (no
pun intended).

Kean