Re: [PATCH 1/1] x86: Change mov $0, %reg with xor %reg, %reg

[Joerg Roedel]

On Fri, Aug 05, 2022 at 09:26:02AM +0000, David Laight wrote:
> Use "xor %rax,%rax" instead of "xor %eax,%eax" to save
> the 'reg' prefix.

Also, some places explicitly use the mov variant to zero a register
without touching rflags. Please be careful to not change those.

Regards,

-- 
Jörg Rödel
jroedel@xxxxxxx

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