linux-kernel - Re: [PATCH 1/2] x86: add is_f00f_bug helper to fault

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Message-ID: <p73d4rzbudl.fsf@bingen.suse.de>
Date:	Fri, 18 Jan 2008 06:00:38 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Harvey Harrison <harvey.harrison@...il.com>
Cc:	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 1/2] x86: add is_f00f_bug helper to fault_32|64.c

Harvey Harrison <harvey.harrison@...il.com> writes:

> Further towards unifying these files, add another helper
> in same spirit as is_errata93.

The better way to handle this would be to move all these workarounds
into notifiers that only get registered on the CPUs that actually have
the bugs.

There is right now no die notifier in the right place for this,
but you could just add one there. This is no performance critical
place.

-Andi
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