Re: [Xen-devel] L1[0x1fb] = 0000000000000000 which faults on one type of machine but on another works?

["Jan Beulich" <JBeulich@xxxxxxxxxx>]

>>> On 16.03.11 at 23:19, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:
> But one thing I can't understand is why on one machine (IBM x3850)
> I get this crash, while another one with the same pagetable contents
> (L1 has nothing for 0x1fb) it works just fine? I added a panic and used
> the Xen hypervisor kdb to manually inspect the pagetable, and it has
> the same contents as the IBM x3850 -but it boots fine with this invalid 
> value.
> Any ideas?

Without seeing the full stack trace it's hard to tell. To me, it looks
like a mistake for native_apic_read() to be called at all under Xen,
and perhaps there's one lurking somewhere that gets hit only on
those IBM (Summit?) machines.

Jan


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