From: "Christopher S. Aker" <caker@theshore.net>
To: Keir Fraser <keir.xen@gmail.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
xen devel <xen-devel@lists.xensource.com>
Subject: Re: Xen 4 serial hangs during boot
Date: Fri, 20 Jul 2012 15:44:05 -0400 [thread overview]
Message-ID: <5009B505.8030900@theshore.net> (raw)
In-Reply-To: <CC2F70B8.39237%keir.xen@gmail.com>
On 7/20/12 3:31 PM, Keir Fraser wrote:
> Somehow dom0 disabled the serial-line interrupt during boot. Possibly it
> appeared as a PnP device in some BIOS table and dom0 decided to disable it
> because it doesn't think it is being used. Xen would usually stop this
> happening via programming of the IO-APIC/XT-PIC but perhaps there is some
> other method of disabling it on this mainboard, which Xen doesn't catch.
Hmm -- except dom0 hasn't even booted yet at the time the serial stops
working. Xen is 30-60 seconds away from booting dom0 given the RAM
scrub still has to happen.
-Chris
next prev parent reply other threads:[~2012-07-20 19:44 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-12 19:34 Xen 4 occasionally hangs during boot Christopher S. Aker
2011-10-13 7:04 ` Jan Beulich
2011-10-13 10:46 ` Tim Deegan
2012-07-20 17:48 ` Xen 4 serial " Christopher S. Aker
2012-07-20 17:49 ` Andrew Cooper
2012-07-20 17:58 ` Christopher S. Aker
2012-07-20 18:05 ` Andrew Cooper
2012-07-20 19:10 ` Christopher S. Aker
2012-07-20 19:25 ` Andrew Cooper
2012-07-20 19:31 ` Keir Fraser
2012-07-20 19:44 ` Christopher S. Aker [this message]
2012-07-20 19:59 ` Keir Fraser
2012-07-23 14:13 ` Konrad Rzeszutek Wilk
2012-07-23 15:26 ` Keir Fraser
2012-07-23 20:53 ` Christopher S. Aker
2012-07-23 22:03 ` Malcolm Crossley
2012-07-23 22:45 ` Malcolm Crossley
2012-07-24 9:40 ` Andrew Cooper
2012-07-24 10:32 ` Jan Beulich
2012-07-26 13:50 ` Konrad Rzeszutek Wilk
2012-07-26 14:10 ` Jan Beulich
2012-07-26 14:36 ` Konrad Rzeszutek Wilk
2012-07-24 10:46 ` Jan Beulich
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5009B505.8030900@theshore.net \
--to=caker@theshore.net \
--cc=andrew.cooper3@citrix.com \
--cc=keir.xen@gmail.com \
--cc=xen-devel@lists.xensource.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.