Re: [Xen-devel] #599161: Xen debug patch for the "clock shifts by 50 minutes" bug.

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 07.11.12 at 11:10, <Philippe.Simonet@xxxxxxxxxxxx> wrote:
> i compiled  a patched hypervisor for Mauro, it is running since many days 
> and the overflow occured, 
> without clock jumps
> 
>> (XEN) XXX plt_overflow: plt_now=5ece12d34128 plt_wrap=5ece12d09306
>> now=5ece12d16292 old_stamp=35c7c new_stamp=800366a5
>> plt_stamp64=15b800366a5 plt_mask=ffffffff tsc=e3839fd23854
>> tsc_stamp=e3839fcb0273

i.e. we have (in order of time)

 plt_wrap=5ece12d09306
      now=5ece12d16292
  plt_now=5ece12d34128

which is exactly the inverse order of how things should be (now not
necessarily being in the middle). Nor should plt_now and plt_wrap be
that close together. So far I have no idea how this can be explained.

Jan


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