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Date: Fri, 24 Feb 2017 10:46:44 +0100
From: Borislav Petkov <bp@alien8.de>
To: Ingo Molnar <mingo@kernel.org>
Cc: hpa@zytor.com, Peter Zijlstra <peterz@infradead.org>,
        Arjan van de Ven <arjan@linux.intel.com>,
        Thomas Gleixner <tglx@linutronix.de>, linux-kernel@vger.kernel.org,
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        richard.weinberger@gmail.com,
        Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] x86: Implement __WARN using UD0
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On Fri, Feb 24, 2017 at 10:15:37AM +0100, Ingo Molnar wrote:
> With thousands of call sites a one byte opcode would be preferred, that's why INT3 
> is so nice.

ICEBP is also a single-byte: F1. And should be pretty unused :)

-- 
Regards/Gruss,
    Boris.

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