From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Pavel Machek <pavel@suse.cz>
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>, seife@suse.de
Subject: Re: swsusp with highmem, testing wanted
Date: Fri, 26 Mar 2004 09:41:01 +1100 [thread overview]
Message-ID: <1080254461.1195.40.camel@gaston> (raw)
In-Reply-To: <20040325120250.GC300@elf.ucw.cz>
> I'd need to do atomic copy. (Unless someone can guarantee that during
> writing to disk, no highmem page is going to be changed...)
>
> "copy back" during resume is done in assembly, and I'd rather not
> dealed with highmem there.
Can you make that an option ? The PPC version runs in real mode and
can perfectly copy highmem pages (with small tweaks maybe)
> OTOH, if it possible to guarantee that highmem pages do not change
> during reads/writes to disk, I might be able to get away without this
> copy.
I also think we free too much memory btw (and spend too much time
trying to free memory). Have you looked at some of Nigel stuffs in
swsusp2 ? There may be good ideas to borrow...
Ben.
next prev parent reply other threads:[~2004-03-25 22:43 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-24 23:57 swsusp with highmem, testing wanted Pavel Machek
2004-03-25 3:28 ` Benjamin Herrenschmidt
[not found] ` <20040325120250.GC300@elf.ucw.cz>
2004-03-25 22:41 ` Benjamin Herrenschmidt [this message]
2004-03-25 22:59 ` Pavel Machek
2004-03-25 22:44 ` Nigel Cunningham
2004-03-25 23:54 ` Pavel Machek
2004-03-25 23:06 ` Nigel Cunningham
2004-03-26 0:22 ` Benjamin Herrenschmidt
2004-03-25 3:48 ` Jeff Chua
[not found] ` <20040325073244.GE3377@suse.de>
[not found] ` <20040325115129.GB300@elf.ucw.cz>
[not found] ` <20040325121418.GK3377@suse.de>
2004-03-25 15:01 ` Pavel Machek
2004-03-25 15:27 ` Jens Axboe
2004-03-25 22:22 ` Pavel Machek
2004-03-26 14:09 ` Jens Axboe
2004-03-26 14:34 ` Pavel Machek
[not found] ` <20040325100339.GN791@holomorphy.com>
2004-03-25 21:59 ` Pavel Machek
2004-03-26 12:03 ` William Lee Irwin III
2004-03-26 12:08 ` Pavel Machek
2004-03-26 12:36 ` William Lee Irwin III
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