linux-kernel - Re: [PATCH] x86: Configure NX support earlier in setup

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Message-ID: <20140714173541.GF25120@pd.tnic>
Date:	Mon, 14 Jul 2014 19:35:41 +0200
From:	Borislav Petkov <bp@...e.de>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Stuart Hayes <stuart.w.hayes@...il.com>, tglx@...utronix.de,
	mingo@...hat.com, x86@...nel.org, linux-kernel@...r.kernel.org,
	matt.fleming@...el.com
Subject: Re: [PATCH] x86: Configure NX support earlier in setup_arch

On Mon, Jul 14, 2014 at 10:28:43AM -0700, H. Peter Anvin wrote:
> Oh, it is a case of Grub2 utter braindamage. That figures. I guess we
> need to invoke verify_cpu in yet another place.

How so? The bug report speaks of disabling NX in the BIOS, I'm assuming
they're setting bit 34 in IA32_MISC_ENABLE.

How would that affect grub2?

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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