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Re: [Xen-devel] X86_64 and 4GB RAM using Flat Memory Model?

  • To: John Hannfield <hal9020@xxxxxxxxx>
  • From: Keir Fraser <keir@xxxxxxxxxxxxx>
  • Date: Tue, 01 May 2007 14:27:33 +0100
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Tue, 01 May 2007 06:26:18 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AceL8sZhBLCC2ffmEduxNAAX8io7RQAAbMc+
  • Thread-topic: [Xen-devel] X86_64 and 4GB RAM using Flat Memory Model?

On 1/5/07 14:15, "Keir Fraser" <keir@xxxxxxxxxxxxx> wrote:

>  3. There is no command-line option for overrding the e820 map. We could
> lash one up, or I can give you a basic patch for you to fill in the blanks
> with your memory map. You can then build special Xen with hardcoded map for
> that box.

I should add the slightly longer term (post 3.0.5) solution, which will be
that Xen can return to real mode and interrogate e820 itself. We could at
least provide this as a command-line option, even if it's not the default.

 -- Keir

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