linux-kernel - Re: [RFC PATCH 4/4] x86/TSC: Use RDTSCP

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Message-ID: <20181211234308.GW27375@zn.tnic>
Date:   Wed, 12 Dec 2018 00:43:08 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Alexey Dobriyan <adobriyan@...il.com>
Cc:     luto@...nel.org, linux-kernel@...r.kernel.org, tglx@...utronix.de,
        thomas.lendacky@....com, hpa@...or.com, john.stultz@...aro.org,
        x86@...nel.org
Subject: Re: [RFC PATCH 4/4] x86/TSC: Use RDTSCP

On Wed, Dec 12, 2018 at 02:37:53AM +0300, Alexey Dobriyan wrote:
> I have a question: does alternatives ordering matter?

Yes.

> CPU can have both features.

The last present feature wins.

> And other code in this file uses "c" for clobber.

Ok.

-- 
Regards/Gruss,
    Boris.

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