Re: [PATCH 2/2] x86/paravirt: Use XOR r32,r32 to clear register in pv_vcpu_is_preempted()

[Jürgen Groß]

On 20.11.25 20:15, Uros Bizjak wrote:
> x86_64 zero extends 32bit operations, so for 64bit operands,
> XOR r32,r32 is functionally equal to XOR r64,r64, but avoids
> a REX prefix byte when legacy registers are used.
>
> Signed-off-by: Uros Bizjak <ubizjak@xxxxxxxxx>

Reviewed-by: Juergen Gross <jgross@xxxxxxxx>


Juergen

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