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Re: [PATCH] x86emul: drop dead conditional from decode
- To: Jan Beulich <jbeulich@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Mon, 20 Jul 2026 15:06:44 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Teddy Astie <teddy.astie@xxxxxxxxxx>
- Delivery-date: Mon, 20 Jul 2026 14:07:00 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 30/06/2026 2:29 pm, Jan Beulich wrote:
> We know that opcode_table[0x0f] is 0, there's no need to check that. Up
> until ab082ffa87d5 ("x86emul: generate and make use of a canonical opcode
> representation") or maybe already c4e7a67e3a10 ("x86emul: drop
> SrcInvalid") this may have been justified, but it no longer is.
>
> This eliminates a Misra C:2012 rule 2.2 ("There shall be no dead code")
> violation.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
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