linux-kernel - Re: [PATCH][v12] PM / hibernate: Verify the consistent of e820 memory map by md5 digest

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Date:   Sun, 23 Oct 2016 10:01:22 +0200
From:   Pavel Machek <pavel@....cz>
To:     joeyli <jlee@...e.com>
Cc:     Chen Yu <yu.c.chen@...el.com>, linux-pm@...r.kernel.org,
        x86@...nel.org, Thomas Gleixner <tglx@...utronix.de>,
        "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
        linux-kernel@...r.kernel.org,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Borislav Petkov <bp@...en8.de>,
        Len Brown <len.brown@...el.com>,
        Denys Vlasenko <dvlasenk@...hat.com>,
        Dan Williams <dan.j.williams@...el.com>
Subject: Re: [PATCH][v12] PM / hibernate: Verify the consistent of e820
 memory map by md5 digest

Hi!

> > 2. Another case is, this patch replies on comparing the e820_saved, but
> >    currently the e820_save might not be strictly the same across
> >    hibernation, even if BIOS has provided consistent e820 map - In
> >    theory mptable might modify the BIOS-provided e820_saved dynamically
> >    in early_reserve_e820_mpc_new, which would allocate a buffer from
> >    E820_RAM, and marks it from E820_RAM to E820_RESERVED).
> >    This is a potential and rare case we need to deal with in OS in
> >    the future.
> > 
> > Suggested-by: Pavel Machek <pavel@....cz>
> > Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> > Cc: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

Acked-by: Pavel Machek <pavel@....cz>

Rafael, can we get this merged? 12 versions is a bit too much..

Thanks,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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