linux-kernel - Re: [PATCH 16/20] swsusp: do not use virt_to

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Message-Id: <1173309336.13442.2.camel@nigel.suspend2.net>
Date:	Thu, 08 Mar 2007 10:15:36 +1100
From:	Nigel Cunningham <nigel@...el.suspend2.net>
To:	Pavel Machek <pavel@....cz>
Cc:	Vivek Goyal <vgoyal@...ibm.com>,
	linux kernel mailing list <linux-kernel@...r.kernel.org>,
	Reloc Kernel List <fastboot@...ts.osdl.org>,
	ebiederm@...ssion.com, akpm@...ux-foundation.org, ak@...e.de,
	hpa@...or.com, magnus.damm@...il.com, lwang@...hat.com,
	dzickus@...hat.com, rjw@...k.pl
Subject: Re: [PATCH 16/20] swsusp: do not use virt_to_page on kernel data
	address

Hi.

On Wed, 2007-03-07 at 23:50 +0100, Pavel Machek wrote:
> Hi!
> 
> > o virt_to_page() call should be used on kernel linear addresses and not
> >   on kernel text and data addresses. Swsusp code uses it on kernel data
> >   (statically allocated swsusp_header).
> > 
> > o Allocate swsusp_header dynamically so that virt_to_page() can be used
> >   safely.
> > 
> > o I am changing this because in next few patches, __pa() on x86_64 will
> >   no longer support kernel text and data addresses and hibernation breaks. 
> > 
> > Signed-off-by: Vivek Goyal <vgoyal@...ibm.com>
> 
> (I assume this was tested, too?)

Absolutely.

Nigel

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