Re: [Xen-devel] Xen 4.0.4, kernel 3.5.0 HVM crash and kernel BUG

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Wed, Oct 03, 2012 at 03:09:07PM +0300, Valtteri Kiviniemi wrote:
>    Hi,
> 
>    Yes, of course. I disabled these options:
> 
>    Processor type and features:
>    [*] Numa Memory Allocation and Scheduler Support
>    [*] ACPI NUMA detection
> 
>    Power management and ACPI options  --->
>    ACPI (Advanced Configuration and Power Interface) Support
>    -*-   NUMA support
> 

Ok. Good to know.

>    Any Ideas howto debug the VNC problem any further?
>

Maybe start a new thread about the VNC problem.. it seems to be a separate 
issue.

-- Pasi
 
>    - Valtteri
> 
>    2012/10/3 Pasi Kärkkäinen <[1]pasik@xxxxxx>
> 
>      On Wed, Oct 03, 2012 at 12:21:47PM +0300, Valtteri Kiviniemi wrote:
>      >    Hi,
>      >
>      >    I disabled NUMA and upgraded to Xen 4.2.0. Windows domU starts now
>      fine
>      >    and I cant anymore reproduce the hotplug problems. VNC output is
>      still
>      >    just black screen and it actually crashes the the whole VNC client
>      when
>      >    after a few seconds. RealVNC just shuts itself down and tightvnc
>      crashes.
>      >
> 
>      Valtteri: Can you actually paste the names of the .config options you
>      disabled
>      and got the dom0 kernel working without crashes?
> 
>      Maybe Konrad can comment if the current upstream dom0 kernel is supposed
>      to work
>      with NUMA support enabled / compiled in?
> 
>      -- Pasi
> 
>      >    - Valtteri
>      >
>      >    2012/10/2 Valtteri Kiviniemi <[1][2]kiviniemi.valtteri@xxxxxxxxx>
>      >
>      >      Hi,
>      >
>      >      Yes, they are all loaded and I'm running Linux PV-virtuals at the
>      same
>      >      time with no problems. Only HVM is not working. I have single
>      socket
>      >      corei7 processor and NUMA enabled on dom0 kernel, so I will try
>      tomorrow
>      >      to compile dom0 kernel without NUMA, since its not needed and it
>      could
>      >      probably cause some kind of memory related problems.
>      >
>      >      I will also try Debian squeezes package Xen and test if it is
>      working
>      >      with my hardware.
>      >
>      >      - Valtteri
>      >
>      >      2012/10/2 Konrad Rzeszutek Wilk <[2][3]konrad@xxxxxxxxxx>
>      >
>      >        On Tue, Oct 2, 2012 at 10:55 AM, Valtteri Kiviniemi
>      >        <[3][4]kiviniemi.valtteri@xxxxxxxxx> wrote:
>      >        > Hi,
>      >        >
>      >        > Yes, I understood for what the parameters were for. I'ts been
>      a long
>      >        time
>      >        > since I last had major problems with Xen (maybe 3.1 or
>      something,
>      >        been using
>      >        > Xen since version 2) and I had a shady recollection that Xen
>      was
>      >        required to
>      >        > be build debugging enabled in order to get any usable
>      debugging
>      >        data.
>      >        >
>      >        > But anyway, I cant reproduce that kernel crash everytime, it
>      just
>      >        happens
>      >        > sometimes. Major problem is the black screen on VNC and
>      second
>      >        problem seems
>      >        > to be that everytime i try to run Linux in HVM mode it
>      somehow
>      >        breaks the
>      >        > hotplug scripts.
>      >        >
>      >
>      >        So do you have all backends loaded? Is xen-netback and
>      xen-blkback
>      >        running?
>      >        Do you also have tun loaded?
>      >
>      > References
>      >
>      >    Visible links
>      >    1. mailto:[5]kiviniemi.valtteri@xxxxxxxxx
>      >    2. mailto:[6]konrad@xxxxxxxxxx
>      >    3. mailto:[7]kiviniemi.valtteri@xxxxxxxxx
> 
> References
> 
>    Visible links
>    1. mailto:pasik@xxxxxx
>    2. mailto:kiviniemi.valtteri@xxxxxxxxx
>    3. mailto:konrad@xxxxxxxxxx
>    4. mailto:kiviniemi.valtteri@xxxxxxxxx
>    5. mailto:kiviniemi.valtteri@xxxxxxxxx
>    6. mailto:konrad@xxxxxxxxxx
>    7. mailto:kiviniemi.valtteri@xxxxxxxxx

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