From: "Huang, Ying" <ying.huang@intel.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>, Pavel Machek <pavel@ucw.cz>,
nigel@nigel.suspend2.net, "Rafael J. Wysocki" <rjw@sisk.pl>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org,
linux-pm@lists.linux-foundation.org,
Kexec Mailing List <kexec@lists.infradead.org>
Subject: Re: [PATCH -mm] kexec jump -v9
Date: Fri, 16 May 2008 09:55:02 +0800 [thread overview]
Message-ID: <1210902902.23707.164.camel@caritas-dev.intel.com> (raw)
In-Reply-To: <m1skwjghen.fsf@frodo.ebiederm.org>
On Thu, 2008-05-15 at 18:35 -0700, Eric W. Biederman wrote:
> Vivek Goyal <vgoyal@redhat.com> writes:
>
> > ioapic_suspend() is not putting APICs in Legacy mode and that's why
> > we are seeing the issue. It only saves the IOAPIC routing table entries
> > and these entries are restored during ioapic_resume().
> >
> > But I think somebody has to put APICs in legacy mode for normal
> > hibernation also. Not sure who does it. May be BIOS, so that during
> > resume, second kernel can get the timer interrupts.
>
> I doubt anything cares in the suspend to ram case. There should just
> be a small BIOS trampoline to get back to linux when the processor
> restarts. And you don't need interrupts for any of that.
As far as I know, in suspend to ram, interrupt is used as waking up
event, such as, keyboard interrupt.
Best Regards,
Huang Ying
next prev parent reply other threads:[~2008-05-16 1:49 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-06 3:13 [PATCH -mm] kexec jump -v9 Huang, Ying
2008-03-11 21:10 ` Vivek Goyal
2008-03-11 21:59 ` Nigel Cunningham
2008-03-11 23:55 ` Eric W. Biederman
2008-03-12 0:09 ` david
2008-03-12 2:14 ` Huang, Ying
2008-03-12 18:53 ` Vivek Goyal
2008-03-13 0:01 ` Eric W. Biederman
2008-03-11 22:18 ` Rafael J. Wysocki
2008-03-12 2:02 ` Eric W. Biederman
2008-03-12 2:26 ` Huang, Ying
2008-03-11 23:24 ` Pavel Machek
2008-03-11 23:49 ` Rafael J. Wysocki
2008-03-12 1:55 ` Huang, Ying
2008-03-12 15:01 ` [linux-pm] " Alan Stern
2008-03-12 21:53 ` Rafael J. Wysocki
2008-03-13 0:33 ` Eric W. Biederman
2008-03-13 17:03 ` Rafael J. Wysocki
2008-03-13 23:07 ` Eric W. Biederman
2008-03-14 1:31 ` Rafael J. Wysocki
[not found] ` <m1prtsug2e.fsf@ebiederm.dsl.xmission.com>
2008-03-18 23:52 ` Pavel Machek
2008-03-19 0:08 ` Rafael J. Wysocki
2008-03-19 2:33 ` Alan Stern
[not found] ` <m1ve3jtmxk.fsf@ebiederm.dsl.xmission.com>
2008-03-19 15:01 ` Alan Stern
2008-03-19 19:28 ` Rafael J. Wysocki
2008-03-20 10:40 ` Pavel Machek
2008-03-20 22:45 ` Rafael J. Wysocki
2008-03-20 23:01 ` Alan Stern
2008-03-20 23:22 ` Pavel Machek
2008-03-20 23:40 ` Rafael J. Wysocki
2008-03-21 0:36 ` Rafael J. Wysocki
2008-03-21 0:52 ` Alan Stern
2008-03-21 22:05 ` Nigel Cunningham
2008-03-22 16:21 ` Pavel Machek
2008-03-22 17:45 ` Rafael J. Wysocki
2008-03-22 20:49 ` Alan Stern
2008-03-22 21:29 ` Rafael J. Wysocki
2008-05-14 22:38 ` Eric W. Biederman
2008-05-14 23:47 ` Rafael J. Wysocki
2008-05-15 20:55 ` Eric W. Biederman
2008-05-15 21:20 ` Rafael J. Wysocki
2008-05-14 20:41 ` Maxim Levitsky
2008-05-14 23:34 ` Eric W. Biederman
2008-03-12 8:57 ` Pavel Machek
2008-03-12 0:00 ` Nigel Cunningham
2008-03-12 1:45 ` Huang, Ying
2008-03-12 2:17 ` Eric W. Biederman
2008-03-12 6:54 ` Huang, Ying
2008-03-12 19:37 ` Vivek Goyal
2008-03-14 8:03 ` Huang, Ying
2008-03-21 19:12 ` Vivek Goyal
2008-03-25 7:25 ` Huang, Ying
2008-03-12 19:47 ` Vivek Goyal
2008-04-09 9:34 ` Pavel Machek
2008-04-09 12:30 ` Vivek Goyal
2008-05-14 16:03 ` Vivek Goyal
2008-05-14 17:49 ` Vivek Goyal
2008-05-14 20:52 ` Vivek Goyal
2008-05-15 2:32 ` Huang, Ying
2008-05-15 20:09 ` Vivek Goyal
2008-05-16 1:48 ` Huang, Ying
2008-05-16 1:51 ` Vivek Goyal
2008-05-16 2:08 ` Huang, Ying
2008-05-16 12:13 ` Pavel Machek
2008-05-15 5:41 ` Huang, Ying
2008-05-15 18:42 ` Eric W. Biederman
2008-05-16 0:51 ` Vivek Goyal
2008-05-16 1:35 ` Eric W. Biederman
2008-05-16 1:55 ` Huang, Ying [this message]
2008-05-27 7:27 ` Huang, Ying
2008-05-27 22:15 ` Vivek Goyal
2008-05-28 1:35 ` Huang, Ying
2008-05-14 22:30 ` Eric W. Biederman
2008-05-14 23:55 ` Rafael J. Wysocki
2008-05-15 22:03 ` Eric W. Biederman
2008-05-15 23:20 ` Rafael J. Wysocki
2008-05-16 12:18 ` Pavel Machek
2008-05-16 14:20 ` [linux-pm] " Alan Stern
2008-05-15 1:42 ` Huang, Ying
2008-05-15 19:05 ` Rafael J. Wysocki
2008-05-15 14:14 ` [linux-pm] " Alan Stern
2008-05-15 20:48 ` Eric W. Biederman
2008-05-15 21:07 ` Alan Stern
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