[Xen-devel] Re: dom0 pvops crash when used as domU kernel

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Jeremy Fitzhardinge writes ("Re: dom0 pvops crash when used as domU kernel"):
> On 01/26/2010 05:50 AM, Ian Jackson wrote:
> > If so, it doesn't work on amd64.  See attached console output from the
> > guest.
> >
> > The host and guest are both xen-unstable x86_64 with the dom0 pvops
> > kernel.  The host and guest operating system are Debian lenny amd64.
> > The guest is installed with Debian's xen-create-image, which uses
> > debootstrap on the host to construct the guest's filesystem in an LV
> > and set it up ready to be booted PV.
> 
> The backtrace is strange; sshd doing statfs shouldn't be hitting any 
> Xen-specific paths.  That suggests something else has gone wrong earlier.

Quite possibly.  The problem only occurs with the 64-bit kernel.
32bit domU with 32bit dom0 on 64bit Xen works fine, as does
all-32-bit.

> > The problem occurs during or shortly after save/restore.  My test
> > system did this:
> 
> Hm, save/restore got pretty bitrotted for a while.  IanC has done a mass 
> of work on it lately, but its possible there are still some issues.  Are 
> you actually using an AMD processor?  They tend to be undertested.

No,
  model name      : Intel(R) Pentium(R) D CPU 2.80GHz

Ian.

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