Re: [RFC][PATCH 0a/3] TXT: Intel(R) Trusted Execution Technologysupport for Linux - Overview

From: Chris Wright
Date: Thu Oct 09 2008 - 13:46:21 EST


* Pavel Machek (pavel@xxxxxxx) wrote:
> Ok, I don't get it, why would I want to measure my kernel?

Trusted boot. There's always the double-edge sword w/ this. Clearly,
a requirement is that you don't just brick your own box, and have some
policy/mechanism for defining how you'd use trusted boot. I believe
that's all there w/ TXT patch (since it's mostly handled before kernel
boots, TXT kernel bit is just to help w/ handoff).

> I see why Disney would want to do that, but I don't see why we would
> want to help them.
>
> Plus, the fact that trusted mode is pretty much incompatible with
> s3/s4 makes it useless, right?

Why do you say that? Did you look at patch 3/3, see tboot_sleep().

thanks,
-chris
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