Re: [OT] Wrapping memory.

[Alan Cox]

> I would like to have a 64 KBarray (of char), that's trivial, however what
> I would like is for the last 4 KB [yes thankfully this is exactly one
> page... (assume i386)] to reference the same physical memory as the first
> four.

Yep you can do that.

> Is this at all possible? If so, how would I do this in user space (and
> could it be done without root priv?)?

mmap will do what you need. Create a 60K object on disk and mmap it
at the base address and then 60K further on for 4K.