Re: [PATCH] intel_txt: add s3 userspace memory integrity verification

From: H. Peter Anvin
Date: Fri Dec 04 2009 - 17:46:56 EST


On 12/04/2009 02:39 PM, Pavel Machek wrote:
>
> Having "security" technology that silently fails with funny bootloader
> is pretty bad, I'd say.
>

Yes, but this wouldn't be a silent failure -- such a boot loader
wouldn't be able to boot tboot itself either, nor would be able to boot
32-bit kernels (which, in fact, not all boot loaders can); the tboot
boot process in fact in many ways treats tboot itself as a 32-bit
primary kernel, with the Linux kernel as a secondary kernel.

So, this particular failure would not be silent by any means.

-hpa
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