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From: Andi Kleen <andi@firstfloor.org>
Subject: Re: [RFC 08/11] x86/mm: Add nopcid to turn off PCID
References: <cover.1496701658.git.luto@kernel.org>
	<d4eafd524ee51d003d7f7302d5e4e44dc4919e08.1496701658.git.luto@kernel.org>
Date: Mon, 05 Jun 2017 20:22:41 -0700
In-Reply-To: <d4eafd524ee51d003d7f7302d5e4e44dc4919e08.1496701658.git.luto@kernel.org>
	(Andy Lutomirski's message of "Mon, 5 Jun 2017 15:36:32 -0700")
Message-ID: <87wp8pol4u.fsf@firstfloor.org>
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To: Andy Lutomirski <luto@kernel.org>
Cc: X86 ML <x86@kernel.org>, Borislav Petkov <bpetkov@suse.de>, Linus Torvalds <torvalds@linux-foundation.org>, Andrew Morton <akpm@linux-foundation.org>, Mel Gorman <mgorman@suse.de>, "linux-mm@kvack.org" <linux-mm@kvack.org>, Nadav Amit <nadav.amit@gmail.com>, Rik van Riel <riel@redhat.com>

Andy Lutomirski <luto@kernel.org> writes:

> The parameter is only present on x86_64 systems to save a few bytes,
> as PCID is always disabled on x86_32.

Seems redundant with clearcpuid.

-Andi

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