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Open Source and information security mailing list archives
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Date: Fri, 8 Jul 2011 10:29:11 +0200 From: Martin Schwidefsky <schwidefsky@...ibm.com> To: "Rafael J. Wysocki" <rjw@...k.pl> Cc: linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org, Pavel Machek <pavel@....cz>, Jiri Slaby <jslaby@...e.cz>, Len Brown <lenb@...nel.org> Subject: Re: [patch 1/1] [PATCH] include storage keys in hibernation image. On Thu, 7 Jul 2011 23:36:25 +0200 "Rafael J. Wysocki" <rjw@...k.pl> wrote: > On Wednesday, June 15, 2011, Martin Schwidefsky wrote: > > On Tue, 14 Jun 2011 22:50:14 +0200 > > "Rafael J. Wysocki" <rjw@...k.pl> wrote: > ... > > > > Well before the preallocation kicked in we don't know which are the relevant > > storage keys. The only other option would be to store all of them which I > > consider to be a inferior solution. > > I've been thinking about that recently a bit. > > Don't we need to restore the keys of the page frames that aren't copied > into the image too? Pages that are free (= not part of the image) will get a zero storage key once they are allocated again. So no, we do not need to include these keys into the hibernation image. -- blue skies, Martin. "Reality continues to ruin my life." - Calvin. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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