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Date:   Thu, 9 Sep 2021 13:18:06 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Luming Yu <luming.yu@gmail.com>
Cc:     Borislav Petkov <bp@alien8.de>,
        Jinhua Wu <wujinhua@linux.alibaba.com>,
        the arch/x86 maintainers <x86@kernel.org>,
        zelin.deng@linux.alibaba.com, jiayu.ni@linux.alibaba.com,
        Andi Kleen <ak@linux.intel.com>,
        Luming Yu <luming.yu@intel.com>, fan.du@intel.com,
        artie.ding@linux.alibaba.com, "Luck, Tony" <tony.luck@intel.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        LKML <linux-kernel@vger.kernel.org>,
        pawan.kumar.gupta@linux.intel.com,
        "Yu, Fenghua" <fenghua.yu@intel.com>,
        "H. Peter Anvin" <hpa@zytor.com>,
        ricardo.neri-calderon@linux.intel.com
Subject: Re: [PATCH] perf: optimize clear page in Intel specified model with
 movq instruction
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On Thu, Sep 09, 2021 at 06:34:40PM +0800, Luming Yu wrote:

> do you mean jump label would not be replaced to nop when its key is enabled?
> so we could not use it in certain functions?

But why add a jump label when you can make that alternative DTRT ?