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Date: Wed, 19 Dec 2012 15:37:01 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Borislav Petkov <bp@alien8.de>, Jacob Shin <jacob.shin@amd.com>,
        Yinghai Lu <yinghai@kernel.org>,
        "H. Peter Anvin" <hpa@linux.intel.com>,
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	<linux-tip-commits@vger.kernel.org>,
        Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
        Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
Subject: Re: [tip:x86/microcode] x86/microcode_intel_early.c: Early update
 ucode on Intel's CPU
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On 12/19/2012 03:30 PM, Borislav Petkov wrote:
> On Wed, Dec 19, 2012 at 03:17:59PM -0800, H. Peter Anvin wrote:
>> I presume with "too big" he really means "oddly shaped".
>
> Yeah, that's why it could be enlarged a little in order to adjust it to
> the MTRR scheme. This is what the BKDG says about it:
>

Yes, they should just cap the hole a few megabytes short and put an UC 
MTRR at 0xfc00000000.  That should happen regardless... this system is 
dangerous without it.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.