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[Xen-ia64-devel] Re: [Xen-devel] Regression in serial console on ia64

To: Horms <horms@xxxxxxxxxxxx>, <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-ia64-devel] Re: [Xen-devel] Regression in serial console on ia64
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Tue, 11 Sep 2007 12:19:54 +0100
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On 11/9/07 12:12, "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx> wrote:

> On 11/9/07 12:06, "Horms" <horms@xxxxxxxxxxxx> wrote:
>> I havnen't investigated why, but 52f308b17bae
>> "xencons: Remove xencons_early_setup() and do not clear use_vt_console."
>> seems to cause a regression on ia64.
>> The problem is that with this change applied the console
>> seems to stop just before the end of boot - no more output,
>> no input.
> Is this when booting dom0? And its serial output (via Xen) that is affected?
> Do you have console=xvc0 on your dom0 cmdline (and no other console= lines)?

My guess is that you have console=tty0 on your cmdline and this is taking
precedence over your serial console for init output. I've seen this kind of
issue before on native when trying to have both console=tty0 and
console=ttyS0 on the cmdline -- init output always seems to go to only one
or the other. I think it's supposed to be the case that the *last* console=
on your cmdline is the one that gets /dev/console and thus gets to swallow
init's output. I'm not sure what the fix is (if any) if you really want your
init output to go to multiple console sinks.

 -- Keir

>  -- Keir
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