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Re: [XEN PATCH][for-4.19 v3 7/8] xen/types: address Rule 10.1 for DECLARE_BITMAP use

To: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
From: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Date: Mon, 23 Oct 2023 15:55:15 -0700 (PDT)
Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx, sstabellini@xxxxxxxxxx, michal.orzel@xxxxxxx, xenia.ragiadakou@xxxxxxx, ayan.kumar.halder@xxxxxxx, consulting@xxxxxxxxxxx, jbeulich@xxxxxxxx, andrew.cooper3@xxxxxxxxxx, roger.pau@xxxxxxxxxx, George Dunlap <george.dunlap@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Wei Liu <wl@xxxxxxx>, Paul Durrant <paul@xxxxxxx>
Delivery-date: Mon, 23 Oct 2023 22:55:30 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On Fri, 20 Oct 2023, Nicola Vetrini wrote:
> Given its use in the declaration
> 'DECLARE_BITMAP(features, IOMMU_FEAT_count)' the argument
> 'bits' has essential type 'enum iommu_feature', which is not
> allowed by the Rule as an operand to the addition operator
> in macro 'BITS_TO_LONGS'.
> 
> This construct is deviated with a deviation comment.
> 
> Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>

Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

References:
- [XEN PATCH][for-4.19 v3 0/8] address violations of MISRA C:2012 Rule 10.1
  - From: Nicola Vetrini
- [XEN PATCH][for-4.19 v3 7/8] xen/types: address Rule 10.1 for DECLARE_BITMAP use
  - From: Nicola Vetrini

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