linux-kernel - Re: [GIT PULL] x86/txt for v2.6.32

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Message-ID: <20090928211745.GA2119@elf.ucw.cz>
Date:	Mon, 28 Sep 2009 23:17:45 +0200
From:	Pavel Machek <pavel@....cz>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Joseph Cihula <joseph.cihula@...el.com>,
	Shane Wang <shane.wang@...el.com>
Subject: Re: [GIT PULL] x86/txt for v2.6.32

On Mon 2009-09-28 14:11:25, H. Peter Anvin wrote:
> On 09/28/2009 02:07 PM, Rafael J. Wysocki wrote:
> >>
> >> Well, I worry that S3 support for TXT makes TXT completely useless. A
> >> little liquid nitrogen, remove RAM, place it in another machine,
> >> modify it in any way you want, more liquid nitrogen, place it back.
> >>
> >> Oops, protection provided by TXT is lost.
> > 
> > Ah, I see your point now.
> > 
> 
> Shane Wang sent me a patch for S3 support, but it missed the merge window:
> 
> 	http://marc.info/?i=4A9CE0B2.5060608@intel.com
> 
> *As far as I understand* -- and I haven't looked into it in detail yet,
> having just come back from Plumber's -- this provides integrity
> protection, not content extraction protection.

How does it provide integrity protection? I'm free to modify RAM
content in the other machine....
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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