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Date:   Thu, 9 Dec 2021 16:50:55 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     David Woodhouse <dwmw2@infradead.org>
Cc:     Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>, x86@kernel.org,
        "H. Peter Anvin" <hpa@zytor.com>,
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        "Paul E. McKenney" <paulmck@kernel.org>,
        linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
        rcu@vger.kernel.org, mimoja@mimoja.de, hewenliang4@huawei.com,
        hushiyuan@huawei.com, luolongjun@huawei.com, hejingxian@huawei.com
Subject: Re: [PATCH 09/11] x86/boot: Support parallel startup of secondary
 CPUs
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References: <20211209150938.3518-1-dwmw2@infradead.org>
 <20211209150938.3518-10-dwmw2@infradead.org>
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On Thu, Dec 09, 2021 at 03:09:36PM +0000, David Woodhouse wrote:

> +	lock
> +	btrl	$0, (%rax)


> +	lock
> +	btsw	$0, tr_lock

I find that really weird style, but whatever..