Re: [Xen-devel] Xen not working with stock Debian Wheezy 3.2 kernel on a Core 2 Duo box

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Mon, Jul 08, 2013 at 02:16:07PM +0100, Jan Beulich wrote:
[...]
> 
> > 3.2.0-4-amd64 (just found out that there's actually backtrace in dmesg):
> > [    0.000000] BIOS-provided physical RAM map:
> > [    0.000000]  BIOS-e820: 0000000000000000 - 000000000008f000 (usable)
> > [    0.000000]  BIOS-e820: 000000000008f000 - 00000000000a0000 (reserved)
> > [    0.000000]  BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
> > [    0.000000]  BIOS-e820: 0000000000100000 - 00000000ce69a000 (usable)
> > [    0.000000]  BIOS-e820: 00000000ce69a000 - 00000000ce6f1000 (ACPI NVS)
> > [    0.000000]  BIOS-e820: 00000000ce6f1000 - 00000000cf5fb000 (usable)
> > [    0.000000]  BIOS-e820: 00000000cf5fb000 - 00000000cf608000 (reserved)
> > [    0.000000]  BIOS-e820: 00000000cf608000 - 00000000cf6a5000 (usable)
> > [    0.000000]  BIOS-e820: 00000000cf6a5000 - 00000000cf6aa000 (ACPI data)
> > [    0.000000]  BIOS-e820: 00000000cf6aa000 - 00000000cf6ab000 (usable)
> > [    0.000000]  BIOS-e820: 00000000cf6ab000 - 00000000cf6f2000 (ACPI NVS)
> > [    0.000000]  BIOS-e820: 00000000cf6f2000 - 00000000cf6ff000 (ACPI data)
> > [    0.000000]  BIOS-e820: 00000000cf6ff000 - 00000000cf700000 (usable)
> > [    0.000000]  BIOS-e820: 00000000cf700000 - 00000000d0000000 (reserved)
> > [    0.000000]  BIOS-e820: 00000000fff00000 - 0000000100000000 (reserved)
> > [    0.000000]  BIOS-e820: 0000000100000000 - 000000022c000000 (usable)
> 
> So no such block right off the BIOS. You're not using Xen TXT code
> by chance? Off the top of my head I don't recall any other place
> where multiple RAM pages might get turned into "unusable".
> 

I don't think so but I'm not sure. I don't see any TXT option in BIOS
setting, so I presume that mother board doesn't have such thing -- it's
pretty old.


Wei.

> Jan

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