Re: [Xen-devel] Xen4.2 S3 regression?

[Ben Guthro <ben@xxxxxxxxxx>]

On Fri, Sep 7, 2012 at 4:38 AM, Jan Beulich <JBeulich@xxxxxxxx> wrote:

>>> On 06.09.12 at 18:42, Ben Guthro <ben@xxxxxxxxxx> wrote:
> Odd.
> The behavior seems to change, when not running with serial output.

Odd indeed. Could you (unless you are already) try running the
serial console in polling mode (i.e. without IRQ), to see whether
the IRQs coming from it somehow keep the system alive at a
certain point?

I tried to do this at the end of yesterday, since you had suggested it previously, in this thread.

I did so by adding a ",0" to my com1 line, per the documentation - However, I am running with a PCI serial card, and not an "on-board" one - so my parameter looks like:

com1=115200,8n1,pci,0

I am not totally convinced that it is actually running in polling mode, and started to investigate ns16550.c to verify it was. I plan on resuming this investigation this morning.

If you have any pointers on what I should be looking for - I'd appreciate any suggestions.

/btg

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