Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265415AbUATL5t (ORCPT ); Tue, 20 Jan 2004 06:57:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265422AbUATL5t (ORCPT ); Tue, 20 Jan 2004 06:57:49 -0500 Received: from gprs214-67.eurotel.cz ([160.218.214.67]:31105 "EHLO amd.ucw.cz") by vger.kernel.org with ESMTP id S265415AbUATL5s (ORCPT ); Tue, 20 Jan 2004 06:57:48 -0500 Date: Tue, 20 Jan 2004 12:57:40 +0100 From: Pavel Machek To: Benjamin Herrenschmidt Cc: Geert Uytterhoeven , ncunningham@users.sourceforge.net, Hugang , ncunningham@clear.net.nz, Linux Kernel Mailing List , Debian GNU/Linux PPC Subject: Re: Help port swsusp to ppc. Message-ID: <20040120115740.GB522@elf.ucw.cz> References: <1074483354.10595.5.camel@gaston> <1074489645.2111.8.camel@laptop-linux> <1074490463.10595.16.camel@gaston> <20040119204551.GB380@elf.ucw.cz> <1074555531.10595.89.camel@gaston> <20040120100405.GB183@elf.ucw.cz> <1074598014.739.7.camel@gaston> <20040120113630.GA380@elf.ucw.cz> <1074599060.793.11.camel@gaston> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1074599060.793.11.camel@gaston> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1545 Lines: 33 Hi! > > > > Well, *all* the data pages are saved, so that would be okay (even if > > > > they changed, as I'm replacing all the data pages, that should work), > > > > but I'm not saving kernel text for example. > > > > > > Ahh... that's an interesting point. You aren't saving kernel text. I'm > > > not sure how that could be a problem for me. I think i'll just save it > > > along with the image though. > > > > Also pay attetion to page tables. I know that page tables "copy" > > routine is running from are same between suspend and resume kernel. > > I plan to run everything provided by the suspended kernel actually. My idea > is to keep a handle to a page of the suspended kernel that contains that > code and just kick into it. Copying pages to their final location without > overriding the source pages is a bit of a funky job, but I had to do it > already with BootX so ... I'll work on that during one of the upcoming few > weeks hopefully, I'm a bit swamped with 3 different things at the > moment. You actually *know* that half of memory is free during resume, so you can load kernel-to-be-resumed data into that free memory. That's how swsusp works. It makes it quite simple... Pavel -- When do you have a heart between your knees? [Johanka's followup: and *two* hearts?] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/