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Re: [Xen-users] X86_64 and 4GB RAM

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: "John Hannfield" <hal9020@xxxxxxxxx>
  • Date: Sat, 28 Apr 2007 15:35:43 +0100
  • Delivery-date: Sat, 28 Apr 2007 07:34:25 -0700
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Hi Kupson,

Can you check if this problem is related to debian bug #419994?

OK. Interesting.

You can easily check that, just try command displaymem in grub command
line. If it shows full memory map then I am wrong and your problem is
unrelated to mine.

This is what it shows:

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

It seems to say 4GB there. Is that OK?
Or does it stop at 3072K (first chipset hole) ?


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