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 03:03:20PM +0100, Jan Beulich wrote:
> >>> On 08.07.13 at 15:42, Wei Liu <wei.liu2@xxxxxxxxxx> wrote:
> > 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.
> 
> Odd - the only other place where we do such conversion is when
> clipping memory, which shouldn't be the case here (unless you
> have a strange "mem=" option on your command line).
> 

No, I don't have any memory options in Xen command line.

> And with TXT, you'd at least have one line starting "TBOOT: " in your
> hypervisor log.

Just grep through the log, no tboot output found.


Wei.

> 
> Jan

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