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

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 15.08.12 at 16:58, Ben Guthro <ben@xxxxxxxxxx> wrote:
> On Wed, Aug 15, 2012 at 10:50 AM, Jan Beulich <JBeulich@xxxxxxxx> wrote:
> 
>>
>> > This, of course makes collecting logs difficult.
>>
>> Indeed. Did you try using the serial driver in polling mode
>> (without IRQ that is)?
>>
>>
> I'm not familiar with how to set this up, and a quick glance through
> xen/drivers/charr/ns16550.c didn't really shed much light.
> 
> Is there a README / wiki page, etc describing this?

There's docs/misc/xen-command-line.markdown, which describes
this. It's basically

com1=<baud>,8n1,<port>,<irq>

and you'd want to set <irq> to 0 (I have a patch pending for
post-4.2 that allows omitting all the fields that you don't really
care to change from their default values, but for now you'll
have to specify them).

Jan


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