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

[Valtteri Kiviniemi <kiviniemi.valtteri@xxxxxxxxx>]

Hi,

I enabled debugging, no new information available. DomU starts, VNC has black screen. No crashes so far.

- Valtteri

2012/10/3 Valtteri Kiviniemi <kiviniemi.valtteri@xxxxxxxxx>

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

2012/10/2 Valtteri Kiviniemi <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 <konrad@xxxxxxxxxx>

On Tue, Oct 2, 2012 at 10:55 AM, Valtteri Kiviniemi
<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?

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