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Re: [Xen-users] Xen 3 not seeing the right amount of RAM on x86_64

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: "Chuck McIntyre" <chuck.mcintyre@xxxxxxxxx>
  • Date: Fri, 30 Nov 2007 15:14:45 -0800
  • Delivery-date: Fri, 30 Nov 2007 15:15:33 -0800
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On Nov 30, 2007 1:07 PM, Rafał Kupka <rkupka+Listy.Xen@xxxxxxxxxxxxx> wrote:
> Yes, it's intentional. Xen hypervisor (unlike linux) uses GRUB multiboot
> protocol instead of custom one.
> http://www.gnu.org/software/grub/manual/multiboot/multiboot.html.gz#Boot-information-format
> Look at description of mmap_* fields.

Thanks this is excellent information, and definitely puts me on the track.

Does this seem at all, unusual, to you? To me it sounds like it was by
design, but it is clearly buggy (from the perspective of those of us
trying to use hardware virtualization on machines which have this
problem). I wonder if this is going to change at some point.

In any case, I will take your advice and try to patch grub to see if
it fixes my problem. Will post an update here with my progress.

Thanks again,
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