Date: Fri, 12 Nov 2004 13:52:58 -0500 From: John Baldwin <jhb@FreeBSD.org> To: Marc Olzheim <marcolz@stack.nl> Cc: freebsd-arch@FreeBSD.org Subject: Re: Booting questions .... Message-ID: <200411121352.58518.jhb@FreeBSD.org> In-Reply-To: <20041112092718.GA28754@stack.nl> References: <418AB176.9030604@withagen.nl> <200411100825.33982.jhb@FreeBSD.org> <20041112092718.GA28754@stack.nl>
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On Friday 12 November 2004 04:27 am, Marc Olzheim wrote: > On Wed, Nov 10, 2004 at 08:25:33AM -0500, John Baldwin wrote: > > Note that amd64 uses PAE, so if you want an amd64 version that can do > > more than 4 GB you will have to handle PAE. > > Erhm... You're talking about amd64 running in i386 mode perhaps. Why > would amd64 in native 64-bit mode need PAE ? PAE is how native 64-bit mode does paging. Basically an extended PAE. Perhaps there's a kind of flat mode for 64-bit mode, but I don't think there is. In the kernel we use a psuedo flat-mode by having a direct-mapped region ala the K0seg on Alpha. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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