linux-kernel - Re: [RFC PATCH] x86: Make sure verify

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Message-ID: <20160302214654.GK8362@pd.tnic>
Date:	Wed, 2 Mar 2016 22:46:54 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Brian Gerst <brgerst@...il.com>, X86 ML <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Tom Lendacky <thomas.lendacky@....com>
Subject: Re: [RFC PATCH] x86: Make sure verify_cpu has a good stack

On Wed, Mar 02, 2016 at 01:35:09PM -0800, H. Peter Anvin wrote:
> You're not actually testing anything as the real issue is what happens
> with a relocating bootloader.

Hmm, how would that relocation happen so that va - __START_KERNEL_map
doesn't give pa?

Or do you mean something else with "relocating bootloader"? Do you know
of one which does that?

-- 
Regards/Gruss,
    Boris.

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