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From: Nigel Cunningham <ncunningham@cyclades.com>
Organization: Cyclades Corporation
To: Shaohua Li <shaohua.li@intel.com>
Subject: Re: [PATCH 2/3] swsusp i386 mark special saveable/unsaveable pages
Date: Wed, 19 Apr 2006 12:08:44 +1000
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Cc: lkml <linux-kernel@vger.kernel.org>, "Rafael J. Wysocki" <rjw@sisk.pl>,
       Pavel Machek <pavel@ucw.cz>, Andrew Morton <akpm@osdl.org>
References: <1144809501.2865.40.camel@sli10-desk.sh.intel.com> <200604191141.51492.ncunningham@cyclades.com> <1145411499.19994.12.camel@sli10-desk.sh.intel.com>
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Hi.

On Wednesday 19 April 2006 11:51, Shaohua Li wrote:
> On Wed, 2006-04-19 at 11:41 +1000, Nigel Cunningham wrote:
> > Oh, and while we're on the topic, if only part of a page is NVS, what's
> > the right behaviour? My e820 table has:
> >
> > BIOS-e820: 000000003dff0000 - 000000003dffffc0 (ACPI data)
> > BIOS-e820: 000000003dffffc0 - 000000003e000000 (ACPI NVS)
>
> If only part of a page is NVS, my patch will save the whole page. Any
> other idea?

A device model driver that handles saving just the part of the page, using=
=20
preallocated buffers to avoid the potential allocation problems? (The whole=
=20
page could then safely be Nosave).

Regards,

Nigel

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