Subject: Re: savecore_flags="-z"
To: Jonathan Stone <jonathan@DSG.Stanford.EDU>
From: Jason Thorpe <email@example.com>
Date: 12/02/1999 15:49:17
On Thu, 02 Dec 1999 15:44:22 -0800
Jonathan Stone <jonathan@DSG.Stanford.EDU> wrote:
> So if i had a Xeon motherboard with >4 gigs of memory, or even >2gigs,
> what'd be needed to get NetBSD to use it all? I know some Lisp users
> who're currrently using L**** who'd really like that.
Teach the pmap about the extended PTE format, then fix any bugs you
I know we run on 2G machines okay.... some of the bugs have been squashed
> >Dunno. Though, I would assume that e.g. the SPARC pmap can cope with
> >it, considering that it already has to use > 32-bit physical space just
> >to access e.g. Sbus and on-board devices...
> Yep. May not be quite the same thing as simultaneously mapping more
> than 2^32 of physical memory, though.
I don't see what's so hard to grasp... no more than 2^32 will ever be mapped
at any given time (still a 32-bit virtual address space!), but that 32-bits
of *virtual* address space may access physical space outside the 0 - 0xffffffff
-- Jason R. Thorpe <firstname.lastname@example.org>