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Re: [Xen-devel] Can't see more than 3.5GB of RAM / UEFI / no e820 memory map detected


  • To: <xen-devel@xxxxxxxxxxxxx>
  • From: Jonathan Tripathy <jonnyt@xxxxxxxxxxx>
  • Date: Thu, 23 Aug 2012 10:50:15 +0100
  • Delivery-date: Thu, 23 Aug 2012 09:50:44 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xen.org>

On 23.08.2012 10:43, Keir Fraser wrote:
On 23/08/2012 09:58, "Jonathan Tripathy" <jonnyt@xxxxxxxxxxx> wrote:

What does your RAM map look like now from early Xen boot, using
no-real-mode? It shouldn't be "Xen-e801" any more at least, else the
no-real-mode parameter isn't working.


Still Xen-e801, so it looks like no-real-mode isn't working :(

Grrr it's been broken since tboot support went in, long ago. Going to have
to fix that and backport to 4.1 and 4.0 branches...

 -- Keir

Just for info, is it safe to use no-real-mode on a production system? Please keep in mind that our DomUs are untrusted. Or would it be better if I created a patch to change the order of the if block to prefer the multi-boot memory map?

Thanks


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