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Re: [Xen-devel] [PATCH 2/2] x86: introduce NOP9 forms

To: Jan Beulich <JBeulich@xxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Date: Mon, 18 Dec 2017 11:23:45 +0000
Delivery-date: Mon, 18 Dec 2017 11:23:57 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 18/12/17 10:13, Jan Beulich wrote:
> Both Intel and AMD recommend an operand-size-override-prefixed long NOP
> form for covering 9 bytes, so introduce this and use it in p6_nops[] to
> allow further reducing the number of NOPs needed when covering larger
> ranges.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

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References:
- [Xen-devel] [PATCH 0/2] x86: NOP improvements
  - From: Jan Beulich
- [Xen-devel] [PATCH 2/2] x86: introduce NOP9 forms
  - From: Jan Beulich

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