linux-kernel - Re: [tip:x86/pti] x86/cpu/AMD: Use LFENCE_RDTSC instead of MFENCE

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Message-ID: <alpine.DEB.2.20.1801081125160.1735@nanos>
Date:   Mon, 8 Jan 2018 11:25:33 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     "Woodhouse, David" <dwmw@...zon.co.uk>
cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "mingo@...nel.org" <mingo@...nel.org>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "tim.c.chen@...ux.intel.com" <tim.c.chen@...ux.intel.com>,
        "torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
        "hpa@...or.com" <hpa@...or.com>, "pjt@...gle.com" <pjt@...gle.com>,
        "bp@...en8.de" <bp@...en8.de>,
        "dave.hansen@...el.com" <dave.hansen@...el.com>,
        "thomas.lendacky@....com" <thomas.lendacky@....com>,
        "gregkh@...ux-foundation.org" <gregkh@...ux-foundation.org>,
        "linux-tip-commits@...r.kernel.org" 
        <linux-tip-commits@...r.kernel.org>
Subject: Re: [tip:x86/pti] x86/cpu/AMD: Use LFENCE_RDTSC instead of
 MFENCE_RDTSC

On Mon, 8 Jan 2018, Woodhouse, David wrote:

> On Mon, 2018-01-08 at 11:08 +0100, Thomas Gleixner wrote:
> > I'm dropping these patches until this question is answered.
> 
> I've rebased my retpoline tree on top of tip/x86/pti from before those
> patches (from my BUG_SPECTRE_Vx patch).

That's not a problem. They still apply