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


  • To: "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>
  • From: "John Hannfield" <hal9020@xxxxxxxxx>
  • Date: Sat, 28 Apr 2007 16:41:09 +0100
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Sat, 28 Apr 2007 08:39:42 -0700
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On 4/28/07, Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> wrote:
On 28/4/07 15:39, "John Hannfield" <hal9020@xxxxxxxxx> wrote:

>  [Address Range Descriptor entries immediately follow (values are 64-bit)]
>    Usable RAM:  Base Address:  0x0 X 4GB + 0x0,
>       Length:   0x0 X 4GB + 0xa0000 bytes
>    Reserved:  Base Address:  0x0 X 4GB + 0xa0000,
>       Length:   0x0 X 4GB + 0x60000 bytes
>    Usable RAM:  Base Address:  0x0 X 4GB + 0x100000,
>       Length:   0x0 X 4GB + 0x300000 bytes

Here it looks like GRUB is claiming you have 4MB of RAM, which obviously
isn't right.

You mean this bit about 3072K ?

grub> displaymem
displaymem
EISA Memory BIOS Interface is present
Address Map BIOS Interface is present
Lower memory: 640K, Upper memory (to first chipset hole): 3072K

I'll try updating grub. I am using debian grub 0.9.7-23   but there is
a more recent
version available.

Thanks Kier,

--

John

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