From: "Huang, Ying" <ying.huang@intel.com>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: nigel@nigel.suspend2.net,
Kexec Mailing List <kexec@lists.infradead.org>,
linux-kernel@vger.kernel.org, "Rafael J. Wysocki" <rjw@sisk.pl>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Pavel Machek <pavel@ucw.cz>,
Andrew Morton <akpm@linux-foundation.org>,
linux-pm@lists.linux-foundation.org
Subject: Re: [PATCH -mm 2/2] kexec jump -v11: save/restore device state
Date: Fri, 13 Jun 2008 09:18:52 +0800 [thread overview]
Message-ID: <1213319932.22697.9.camel@caritas-dev.intel.com> (raw)
In-Reply-To: <20080612130225.GA9654@redhat.com>
On Thu, 2008-06-12 at 09:02 -0400, Vivek Goyal wrote:
[...]
> Few things I don't understand.
>
> - Are you saying that hibernated image will be saved in initrd
> (rootfs.gz)? But that saving is only in RAM, we never write back
> it to disk?
No. Hibernated image should be saved in a dedicated raw partition as you
said below.
> - I thought we probably have to dedicate a raw partition kind of thing
> for saving image and then modify boot loader command line to something
> similar to, "resume=partition". Then initrd can go hunting for image
> in respective partition (as specified by command line parameter) and if
> image is not available then continue with normal boot.
Yes. But the boot-loader command line only need to be changed during
system install or hibernation setup. We need not change the location of
"hibernation partition" frequently.
So I think one boot-loader command line is sufficient for:
- normal boot
- normal boot a system to be hibernated
- boot helper system to restore the hibernated system
Best Regards,
Huang Ying
_______________________________________________
kexec mailing list
kexec@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/kexec
WARNING: multiple messages have this Message-ID (diff)
From: "Huang, Ying" <ying.huang@intel.com>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.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 2/2] kexec jump -v11: save/restore device state
Date: Fri, 13 Jun 2008 09:18:52 +0800 [thread overview]
Message-ID: <1213319932.22697.9.camel@caritas-dev.intel.com> (raw)
In-Reply-To: <20080612130225.GA9654@redhat.com>
On Thu, 2008-06-12 at 09:02 -0400, Vivek Goyal wrote:
[...]
> Few things I don't understand.
>
> - Are you saying that hibernated image will be saved in initrd
> (rootfs.gz)? But that saving is only in RAM, we never write back
> it to disk?
No. Hibernated image should be saved in a dedicated raw partition as you
said below.
> - I thought we probably have to dedicate a raw partition kind of thing
> for saving image and then modify boot loader command line to something
> similar to, "resume=partition". Then initrd can go hunting for image
> in respective partition (as specified by command line parameter) and if
> image is not available then continue with normal boot.
Yes. But the boot-loader command line only need to be changed during
system install or hibernation setup. We need not change the location of
"hibernation partition" frequently.
So I think one boot-loader command line is sufficient for:
- normal boot
- normal boot a system to be hibernated
- boot helper system to restore the hibernated system
Best Regards,
Huang Ying
next prev parent reply other threads:[~2008-06-13 1:16 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-10 7:15 [PATCH -mm 2/2] kexec jump -v11: save/restore device state Huang, Ying
2008-06-10 7:15 ` Huang, Ying
2008-06-10 18:01 ` Len Brown
2008-06-10 18:01 ` [linux-pm] " Len Brown
2008-06-10 18:01 ` Len Brown
2008-06-11 1:01 ` Huang, Ying
2008-06-11 1:01 ` [linux-pm] " Huang, Ying
2008-06-11 1:01 ` Huang, Ying
2008-06-11 8:21 ` Len Brown
2008-06-11 8:21 ` [linux-pm] " Len Brown
2008-06-11 8:21 ` Len Brown
2008-06-11 9:46 ` Huang, Ying
2008-06-11 9:46 ` [linux-pm] " Huang, Ying
2008-06-11 9:46 ` Huang, Ying
2008-06-13 18:05 ` Vivek Goyal
2008-06-13 18:05 ` [linux-pm] " Vivek Goyal
2008-06-13 18:05 ` Vivek Goyal
2008-06-16 1:29 ` Huang, Ying
2008-06-16 1:29 ` Huang, Ying
2008-06-16 1:29 ` Huang, Ying
2008-06-11 16:30 ` Vivek Goyal
2008-06-11 16:30 ` Vivek Goyal
2008-06-12 0:53 ` Huang, Ying
2008-06-12 0:53 ` Huang, Ying
2008-06-12 0:53 ` Huang, Ying
2008-06-12 13:02 ` Vivek Goyal
2008-06-12 13:02 ` Vivek Goyal
2008-06-13 1:18 ` Huang, Ying
2008-06-13 1:18 ` Huang, Ying [this message]
2008-06-13 1:18 ` Huang, Ying
2008-06-12 13:02 ` Vivek Goyal
2008-06-11 16:30 ` Vivek Goyal
-- strict thread matches above, loose matches on Subject: below --
2008-06-10 7:15 Huang, Ying
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