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


  • To: Jonathan Tripathy <jonnyt@xxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxx>
  • From: Keir Fraser <keir@xxxxxxx>
  • Date: Thu, 23 Aug 2012 09:43:35 +0100
  • Delivery-date: Thu, 23 Aug 2012 08:44:00 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xen.org>
  • Thread-index: Ac2BC2Hb83+ygNg12U2gHYQ/WdYZzg==
  • Thread-topic: [Xen-devel] Can't see more than 3.5GB of RAM / UEFI / no e820 memory map detected

On 23/08/2012 09:28, "Jonathan Tripathy" <jonnyt@xxxxxxxxxxx> wrote:

> Unfortunately, no-real-mode didn't work :(
> 
> In xm info, I see
> 
> xen_commandline : placeholder no-real-mode
> 
> Not sure where placeholder is coming from...
> 
> Also, I'm conscience that no-real-mode may cause other problems as it's
> designed for debugging?

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.

The installer probably added 'placeholder' because older versions of Xen
skipped the first argument (because on old GRUB that was the path/to/grub
rather than a real argument).

 -- Keir



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