Date: Fri, 4 Mar 2005 22:43:29 +0100
From: Pavel Machek <pavel@suse.cz>
To: Nigel Cunningham <ncunningham@cyclades.com>
Cc: Andrew Morton <akpm@osdl.org>, mjg59@scrf.ucam.org, hare@suse.de,
       "Barry K. Nathan" <barryn@pobox.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: swsusp: allow resume from initramfs
Message-ID: <20050304214329.GD2385@elf.ucw.cz>
References: <20050304101631.GA1824@elf.ucw.cz> <20050304030410.3bc5d4dc.akpm@osdl.org> <20050304175038.GE9796@ip68-4-98-123.oc.oc.cox.net> <1109971327.3772.280.camel@desktop.cunningham.myip.net.au>
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Hi!

> > > I don't understand how this can be affected by the modularness of the
> > > kernel.  Can you explain a little more?
> > > 
> > > Would it not be simpler to just add "resume=03:02" to the boot command line?
> > 
> > In addition to what others have mentioned, there's also the situation
> > where swap is on a logical volume. In that case, the initramfs needs to
> > get LVM up and running before you can even think about resuming.
> > 
> > Swap on a logical volume is the default Fedora Core 3 partition layout,
> > and I imagine it's the default for Red Hat Enterprise Linux 4 as well.
> 
> You guys are reinventing the wheel a lot at the moment and I'm in the
> middle of doing it for x86_64 lowlevel code :> Can we see if we can work
> a little more closely - perhaps we can get some shared code going that
> will allow us to handle these issues without stepping on each others'
> feet? In particular, shared code for
> 
> - initramfs and initrd support

Its actually done, and it was few strategically placed lines of code
(like 20 lines). I do not think it can be meaningfully shared.

> - lowlevel suspend & resume

This makes very good sense to share. We have i386, x86-64 and ppc
versions. They simply walk list of pbe's; that should be simple enough
to be usable for suspend2, too....
								Pavel
-- 
People were complaining that M$ turns users into beta-testers...
...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!
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