Re: Use of __pa() with CONFIG_NONLINEAR

Dave Hansen
2004-07-28T20:14:04Z

On Wed, 2004-07-28 at 12:47, Martin J. Bligh wrote:
> Can someone explain the necessity to create the new address space? We don't
> need it with the current holes between nodes, and from my discssions with
> Andy, I'm now unconvinced it's necessary.

Actually, the new address space is quite separated from what I'm
proposing here. I'd prefer to discuss that part when we have an
implementation surrounding it. I can explain it now if you'd like, but
it's going to be a bit harder with no code.

The reason we need boot-time __{p,v}a() macros is really quite separate
from the new (logical) address space. These new macros are just so we
can assume flat addressing during boot or compile-time, before any
nonlinear structures are set up.

-- Dave