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From: Juli Mallett <jmallett@FreeBSD.org>
Date: Wed, 28 Jul 2010 16:51:34 -0700
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To: "M. Warner Losh" <imp@bsdimp.com>
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Subject: Re: Support for 64bit userspace.
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On Wed, Jul 28, 2010 at 16:46, M. Warner Losh <imp@bsdimp.com> wrote:
> Eventually, and by no means should this hold things up today, I'd like
> to be able to run 32-bit and 64-bit programs on the same system...

That isn't impacted by the pmap changes at all.  Being able to support
a larger user address space causes no problems with supporting
programs which only use 0x00000000-0x7fffffff.  It's only the normal
freebsd32 compatibility that is required.

Juli.