From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Keir Fraser <keir.fraser@eu.citrix.com>
Cc: Huacai Chen <huacai.chen@intel.com>,
xen-devel@lists.xensource.com, Jan Beulich <jbeulich@novell.com>
Subject: Re: [patch]Add a new reboot method
Date: Thu, 29 May 2008 15:59:26 +0100 [thread overview]
Message-ID: <20080529155926.17dffcf6@core> (raw)
In-Reply-To: <C4646E6C.2165E%keir.fraser@eu.citrix.com>
On Thu, 29 May 2008 14:30:04 +0100
Keir Fraser <keir.fraser@eu.citrix.com> wrote:
> On 29/5/08 14:09, "Jan Beulich" <jbeulich@novell.com> wrote:
>
> >> You might want to boot a 32bit kernel and try acpi=off, if that does the
> >> trick then its (another) ACPI bug and the cf9 is red herring ?
> >
> > As Keir also pointed out, there's no ACPI involved in rebooting. I also
> > did verify (in a 32-bit kernel) that it's the keyboard boot sequence that
> > causes the machine to hang.
>
> ACPI *can* be involved in rebooting though, via FADT's RESET_REGISTER.
> Question is: why does Linux ignore this reboot method?
It doesn't. Well at the least upstream version doesn't. We default to
keyboard currently but that probably wants reconsidering for modern
systems.
Alan
next prev parent reply other threads:[~2008-05-29 14:59 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-29 9:20 [patch]Add a new reboot method Chen, Huacai
2008-05-29 9:26 ` Keir Fraser
2008-05-29 10:26 ` Alan Cox
2008-05-29 10:56 ` Jan Beulich
2008-05-29 11:49 ` Alan Cox
2008-05-29 12:18 ` Keir Fraser
2008-05-29 12:35 ` Keir Fraser
2008-05-29 12:52 ` Chen, Huacai
2008-05-29 13:09 ` Jan Beulich
2008-05-29 13:30 ` Keir Fraser
2008-05-29 14:59 ` Alan Cox [this message]
2008-05-29 15:49 ` Keir Fraser
2008-05-29 16:01 ` Alan Cox
2008-05-29 17:21 ` Keir Fraser
2008-05-29 19:05 ` Keir Fraser
2008-05-29 14:49 ` Alan Cox
2008-05-29 15:48 ` 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=20080529155926.17dffcf6@core \
--to=alan@lxorguk.ukuu.org.uk \
--cc=huacai.chen@intel.com \
--cc=jbeulich@novell.com \
--cc=keir.fraser@eu.citrix.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.