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Date: Thu, 4 Aug 2022 17:53:27 +0200
From: Borislav Petkov <bp@alien8.de>
To: Kanna Scarlet <knscarlet@gnuweeb.org>
Cc: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
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Subject: Re: [PATCH 1/1] x86: Change mov $0, %reg with xor %reg, %reg
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References: <20220804152656.8840-1-knscarlet@gnuweeb.org>
 <20220804152656.8840-2-knscarlet@gnuweeb.org>
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On Thu, Aug 04, 2022 at 03:26:55PM +0000, Kanna Scarlet wrote:
> Change mov $0, %reg with xor %reg, %reg because xor %reg, %reg is
> smaller so it is good to save space

Bonus points if you find out what other advantage

XOR reg,reg

has when it comes to clearing integer registers.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette