Re: [PATCH 0/2] Kexec jump: The first step to kexec base hibernation

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From: Rafael J. Wysocki

Subject: Re: [PATCH 0/2] Kexec jump: The first step to kexec base hibernation

Date: Friday, July 13, 2007 - 5:01 am

On Friday, 13 July 2007 19:32, Huang, Ying wrote:
quoted text> On Thu, 2007-07-12 at 20:06 -0700, david@lang.hm wrote:
> > >> I agree, a stipped down hibernate kernel can be very small, not allocating
> > >> this memory until it's needed is a step for the final polishing.
> > >
> > > I'm not sure if I agree with that.  In any case, having to use two different
> > > kernels for hibernation would be a big drawback.
> > 
> > I see it as a big advantage to not have to use the main kernel for the 
> > suspend. please keep it as an option at least.
> 
> Yes. It has additional bonus to make it possible to write/read image
> from a program other than main kernel. For example, for a specific
> mobile device product (Such as Intel MID), a customized ultra-small
> program (or kernel) can be composed to write/read image. That way, the
> hibernate/resume time can be reduced to minimal.

You don't need kexec for that.  This is how the userland hibernation (aka
uswsusp) works.

Greetings,
Rafael


-- 
"Premature optimization is the root of all evil." - Donald Knuth
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Messages in current thread:

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Pavel Machek, (Wed Jul 11, 4:13 am)

[PATCH 0/2] Kexec jump: The first step to kexec base hiber ..., Huang, Ying, (Wed Jul 11, 8:30 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Andrew Morton, (Wed Jul 11, 5:22 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Jeremy Fitzhardinge, (Wed Jul 11, 10:48 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Wed Jul 11, 11:43 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Thu Jul 12, 12:03 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Pavel Machek, (Thu Jul 12, 1:54 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Thu Jul 12, 3:10 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Thu Jul 12, 5:38 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Thu Jul 12, 5:46 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Thu Jul 12, 5:47 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Thu Jul 12, 5:53 am)

Re: [PATCH 0/2] Kexec jump: The first step to , Rafael J. Wysocki, (Thu Jul 12, 6:01 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., jimmy bahuleyan, (Thu Jul 12, 6:22 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Mark Lord, (Thu Jul 12, 6:51 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Mark Lord, (Thu Jul 12, 6:55 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Pavel Machek, (Thu Jul 12, 7:06 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Huang, Ying, (Thu Jul 12, 7:43 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Pavel Machek, (Thu Jul 12, 7:49 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Thu Jul 12, 8:35 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Mark Lord, (Thu Jul 12, 9:03 am)

Re: [linux-pm] Re: [PATCH 0/2] Kexec jump: The first step ..., Alan Stern, (Thu Jul 12, 9:09 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Huang, Ying, (Thu Jul 12, 9:28 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Eric W. Biederman, (Thu Jul 12, 9:32 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Mark Lord, (Thu Jul 12, 9:35 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Huang, Ying, (Thu Jul 12, 10:09 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Huang, Ying, (Thu Jul 12, 10:18 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Thu Jul 12, 11:42 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Thu Jul 12, 11:49 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Thu Jul 12, 11:57 am)

Re: [PATCH 0/2] Kexec jump: The first step to , david, (Thu Jul 12, 12:03 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Thu Jul 12, 12:05 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Thu Jul 12, 12:09 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Thu Jul 12, 12:14 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Thu Jul 12, 12:20 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Thu Jul 12, 12:34 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Thu Jul 12, 12:45 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Eric W. Biederman, (Thu Jul 12, 12:49 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Jeremy Maitin-Shepard, (Thu Jul 12, 12:55 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Jeremy Maitin-Shepard, (Thu Jul 12, 1:05 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Thu Jul 12, 1:45 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Mark Lord, (Thu Jul 12, 7:38 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Thu Jul 12, 8:06 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Thu Jul 12, 8:12 pm)

Hibernating To Swap Considered Harmful, Joseph Fannin, (Thu Jul 12, 10:42 pm)

Re: Hibernating To Swap Considered Harmful, david, (Thu Jul 12, 10:57 pm)

Re: Hibernating To Swap Considered Harmful, Joseph Fannin, (Thu Jul 12, 11:20 pm)

Re: Hibernating To Swap Considered Harmful, david, (Thu Jul 12, 11:27 pm)

Re: Hibernating To Swap Considered Harmful, Joseph Fannin, (Fri Jul 13, 12:15 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Fri Jul 13, 2:17 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Fri Jul 13, 2:25 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Fri Jul 13, 2:29 am)

Re: Hibernating To Swap Considered Harmful, Rafael J. Wysocki, (Fri Jul 13, 2:30 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Fri Jul 13, 2:38 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Fri Jul 13, 4:41 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Fri Jul 13, 4:59 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Fri Jul 13, 5:01 am)

Re: Hibernating To Swap Considered Harmful, Jeremy Maitin-Shepard, (Fri Jul 13, 7:35 am)

Re: [linux-pm] Re: [PATCH 0/2] Kexec jump: The first step ..., Alan Stern, (Fri Jul 13, 7:37 am)

Re: [linux-pm] Re: [PATCH 0/2] Kexec jump: The first step ..., Rafael J. Wysocki, (Fri Jul 13, 8:31 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Eric W. Biederman, (Fri Jul 13, 9:43 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Huang, Ying, (Fri Jul 13, 10:32 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Huang, Ying, (Fri Jul 13, 4:15 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Huang, Ying, (Fri Jul 13, 4:18 pm)

Re: Hibernating To Swap Considered Harmful, Joseph Fannin, (Fri Jul 13, 5:45 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Huang, Ying, (Fri Jul 13, 10:48 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Sat Jul 14, 12:12 am)

Re: [linux-pm] Re: [PATCH 0/2] Kexec jump: The first step ..., david, (Sat Jul 14, 12:13 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Sat Jul 14, 12:51 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Sat Jul 14, 1:33 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Sat Jul 14, 2:24 am)

Re: Hibernating To Swap Considered Harmful, Rafael J. Wysocki, (Sat Jul 14, 2:48 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Sat Jul 14, 2:59 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Huang, Ying, (Sat Jul 14, 3:55 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Sat Jul 14, 12:16 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Sat Jul 14, 1:00 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Sat Jul 14, 1:34 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Sat Jul 14, 2:06 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Sat Jul 14, 2:13 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Sat Jul 14, 2:34 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Huang, Ying, (Sun Jul 15, 2:30 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Sun Jul 15, 3:31 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Sun Jul 15, 3:39 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Sun Jul 15, 3:49 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Sun Jul 15, 12:23 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Sun Jul 15, 12:33 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Sun Jul 15, 3:59 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Sun Jul 15, 4:11 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Sun Jul 15, 4:22 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Sun Jul 15, 4:33 pm)

Re: Hibernating To Swap Considered Harmful, Joseph Fannin, (Sun Jul 15, 10:37 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Mon Jul 16, 5:17 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Huang, Ying, (Mon Jul 16, 7:42 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Mon Jul 16, 8:40 am)

Re: Hibernating To Swap Considered Harmful, Joseph Fannin, (Mon Jul 16, 5:12 pm)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Mon Jul 16, 9:18 pm)

Re: Hibernating To Swap Considered Harmful, Oliver Neukum, (Mon Jul 16, 10:44 pm)

Re: Hibernating To Swap Considered Harmful, Joseph Fannin, (Mon Jul 16, 11:28 pm)

Re: Hibernating To Swap Considered Harmful, david, (Mon Jul 16, 11:42 pm)

Re: Hibernating To Swap Considered Harmful, Oliver Neukum, (Tue Jul 17, 12:10 am)

Re: Hibernating To Swap Considered Harmful, Joseph Fannin, (Tue Jul 17, 12:26 am)

Re: Hibernating To Swap Considered Harmful, david, (Tue Jul 17, 12:34 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., david, (Tue Jul 17, 1:13 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Tue Jul 17, 4:46 am)

Re: Hibernating To Swap Considered Harmful, Rafael J. Wysocki, (Tue Jul 17, 4:52 am)

Re: Hibernating To Swap Considered Harmful, Rafael J. Wysocki, (Tue Jul 17, 4:54 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec , Rafael J. Wysocki, (Tue Jul 17, 4:59 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Huang, Ying, (Tue Jul 17, 5:48 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec , Rafael J. Wysocki, (Tue Jul 17, 7:22 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec , david, (Tue Jul 17, 5:25 pm)

RE: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Huang, Ying, (Tue Jul 24, 7:00 am)

Re: [PATCH 0/2] Kexec jump: The first step to kexec base h ..., Rafael J. Wysocki, (Tue Jul 24, 8:27 am)

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