linux-kernel - Re: [PATCH] x86, AMD: Correct F15h IC aliasing issue

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Message-ID: <4E2F09BB.9060605@zytor.com>
Date:	Tue, 26 Jul 2011 11:38:51 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Borislav Petkov <bp@...64.org>
CC:	Avi Kivity <avi@...hat.com>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	"Przywara, Andre" <Andre.Przywara@....com>,
	"Pohlack, Martin" <Martin.Pohlack@....com>
Subject: Re: [PATCH] x86, AMD: Correct F15h IC aliasing issue

On 07/26/2011 11:37 AM, Borislav Petkov wrote:
>>
>> I think the question was the width (and position) for the mask... i.e.
>> your [14:12] above which *is* magic.
> 
> Oh, that's easy: family 15h means bits [14:12] - those bits are used for
> I$ index generation.
> 

In other words, it's completely ad hoc.

	-hpa


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

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