linux-kernel - Re: [PATCH v3 09/11] x86/mm: Add nopcid to turn off PCID

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Message-ID: <20170623093423.ibhq7cyd5pta3cyi@pd.tnic>
Date:   Fri, 23 Jun 2017 11:34:23 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mel Gorman <mgorman@...e.de>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        Nadav Amit <nadav.amit@...il.com>,
        Rik van Riel <riel@...hat.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH v3 09/11] x86/mm: Add nopcid to turn off PCID

On Tue, Jun 20, 2017 at 10:22:15PM -0700, Andy Lutomirski wrote:
> The parameter is only present on x86_64 systems to save a few bytes,
> as PCID is always disabled on x86_32.
> 
> Signed-off-by: Andy Lutomirski <luto@...nel.org>
> ---
>  Documentation/admin-guide/kernel-parameters.txt |  2 ++
>  arch/x86/kernel/cpu/common.c                    | 18 ++++++++++++++++++
>  2 files changed, 20 insertions(+)

Reviewed-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

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