linux-kernel - Re: [PATCH v2] x86/paravirt: useless assignment instructions cause Unixbench full core performance degradation

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Date:   Mon, 27 Jun 2022 11:30:18 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Guo Hui <guohui@...ontech.com>
Cc:     longman@...hat.com, jgross@...e.com, srivatsa@...il.mit.edu,
        amakhalov@...are.com, pv-drivers@...are.com, tglx@...utronix.de,
        mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com,
        x86@...nel.org, hpa@...or.com, will@...nel.org,
        boqun.feng@...il.com, virtualization@...ts.linux-foundation.org,
        wangxiaohua@...ontech.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] x86/paravirt: useless assignment instructions cause
 Unixbench full core performance degradation

On Mon, Jun 27, 2022 at 05:18:02PM +0800, Guo Hui wrote:
> Ok thanks Peter, your suggestion is very good, I will modify my patch as you
> suggested.

Because it messes up the order in which people normally read text.
Why is top-posting such a bad thing?
Top-posting.
What is the most annoying thing in e-mail?