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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Pavel Machek <pavel@ucw.cz>
Cc: Patrick Mochel <mochel@osdl.org>,
	Nigel Cunningham <ncunningham@clear.net.nz>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: SWSUSP Discontiguous pagedir patch
Date: 09 Mar 2003 20:39:48 +0100	[thread overview]
Message-ID: <1047238788.12206.143.camel@zion.wanadoo.fr> (raw)
In-Reply-To: <20030307202759.GA2447@elf.ucw.cz>

> > - It's dependent on the same exact kernel being loaded.
> >
> > It should only be dependent on the binary format of the written metadata.
> 
> ...which leads to simpler design and few megabytes less transfered to
> / from disk. I do not think there's easy way to do it with different
> kernels. State of devices before switching to new kernel is important...

I don't think so.

IMHO, the "old" kernel (used for loading the suspend image) should
quiesce devices in a pretty "normal" way in the exact same way
kexec does (and using the same code path/driver notifiers). I see
no reason why there should be any kind of dependency between the
"loader" kernel and the "loaded" kernel in this regard.

In fact, I'm considering for PPC to just trash the "loader" kernel
when possible and directly load the suspend image from the bootloader

Ben.


  reply	other threads:[~2003-03-09 19:34 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1045784829.3821.10.camel@laptop-linux.cunninghams>
     [not found] ` <20030223223757.GA120@elf.ucw.cz>
     [not found]   ` <1046136752.1784.15.camel@laptop-linux.cunninghams>
     [not found]     ` <20030227132024.GB27084@atrey.karlin.mff.cuni.cz>
2003-02-27 18:42       ` SWSUSP Discontiguous pagedirs Nigel Cunningham
2003-03-01  4:22       ` SWSUSP Discontiguous pagedir patch Nigel Cunningham
2003-03-02 23:55         ` Patrick Mochel
2003-03-03  2:06           ` Nigel Cunningham
2003-03-03  2:31           ` Nigel Cunningham
2003-03-03 12:30           ` Pavel Machek
2003-03-04 20:36             ` Patrick Mochel
2003-03-05 20:50               ` Pavel Machek
2003-03-05 21:52                 ` Linux vs Windows temperature anomaly Jonathan Lundell
2003-03-05 23:11                   ` Herman Oosthuysen
2003-03-05 23:38                     ` Con Kolivas
2003-03-05 23:50                       ` Russell King
2003-03-06  0:29                         ` Ed Sweetman
2003-03-06  0:47                           ` Trever L. Adams
2003-03-06  9:45                             ` Russell King
2003-03-06  1:58                           ` Jonathan Lundell
2003-03-06  7:18                       ` Corvus Corax
2003-03-06  7:57                         ` Ed Sweetman
2003-03-06  8:18                           ` Corvus Corax
2003-03-06  8:58                             ` Ed Sweetman
2003-03-06 15:41                               ` Jesse Pollard
2003-03-06 14:27                         ` Jesse Pollard
2003-03-06  2:57                   ` David Rees
2003-03-06  6:12                   ` Matthias Schniedermeyer
2003-03-06 16:07                     ` Jonathan Lundell
2003-03-07  0:40                   ` Horst von Brand
2003-03-05 18:02           ` SWSUSP Discontiguous pagedir patch Pavel Machek
2003-03-07 17:14             ` Patrick Mochel
2003-03-07 20:27               ` Pavel Machek
2003-03-09 19:39                 ` Benjamin Herrenschmidt [this message]
2003-03-09 20:12                   ` Pavel Machek
2003-03-10 16:49                 ` Patrick Mochel
2003-03-10 19:23                   ` Pavel Machek
2003-03-10 19:05                     ` Patrick Mochel
2003-03-10 22:17                     ` Nigel Cunningham
2003-03-10 23:20                       ` Pavel Machek
2003-03-07 20:36               ` Pavel Machek
2003-03-10 16:51                 ` Patrick Mochel
2003-03-10 19:12                   ` Pavel Machek
2003-03-10 18:59                     ` Patrick Mochel
2003-03-07 20:41               ` Pavel Machek

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