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Re: [XEN PATCH v2 2/4] x86/mtrr: address MISRA C:2012 Rule 5.3
- To: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 7 Aug 2023 14:48:25 +0200
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- Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx, michal.orzel@xxxxxxx, xenia.ragiadakou@xxxxxxx, ayan.kumar.halder@xxxxxxx, consulting@xxxxxxxxxxx, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
- Delivery-date: Mon, 07 Aug 2023 12:48:36 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 04.08.2023 22:45, Stefano Stabellini wrote:
> On Fri, 4 Aug 2023, Nicola Vetrini wrote:
>> Rename variables to avoid shadowing and thus address
>> MISRA C:2012 Rule 5.3:
>> "An identifier declared in an inner scope shall not hide an
>> identifier declared in an outer scope".
>>
>> The shadowing happens between the struct declaration 'mtrr_state' in
>> 'xen/arch/x86/include/asm/mtrr.h' and local variable names.
Let's try to be precise: The issue isn't with the struct declaration,
but with the declaration of the global variable of that name a few
lines later. Afaict - please clarify.
>> The latter are renamed to 'm', which is used elsewhere in
>> 'xen/arch/x86/hvm/mtrr.c' for the same purpose.
>>
>> No functional changes.
>>
>> Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
>
> Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
With - as necessary - a suitable adjustment to the description:
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
Jan
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