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Re: [XEN PATCH 11/11] x86/public: hvm: address violations of MISRA C Rule 20.7
- To: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 27 Mar 2024 09:18:39 +0100
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- Cc: sstabellini@xxxxxxxxxx, michal.orzel@xxxxxxx, xenia.ragiadakou@xxxxxxx, ayan.kumar.halder@xxxxxxx, consulting@xxxxxxxxxxx, andrew.cooper3@xxxxxxxxxx, roger.pau@xxxxxxxxxx, bertrand.marquis@xxxxxxx, julien@xxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 27 Mar 2024 08:18:58 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 22.03.2024 17:02, Nicola Vetrini wrote:
> MISRA C Rule 20.7 states: "Expressions resulting from the expansion
> of macro parameters shall be enclosed in parentheses". Therefore, some
> macro definitions should gain additional parentheses to ensure that all
> current and future users will be safe with respect to expansions that
> can possibly alter the semantics of the passed-in macro parameter.
>
> No functional change.
>
> Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
Btw, I've taken the liberty to drop the (secondary) hvm: prefix from the
subject; I can't ...
> --- a/xen/include/public/arch-x86/xen.h
> +++ b/xen/include/public/arch-x86/xen.h
> @@ -36,7 +36,7 @@
> #define __XEN_GUEST_HANDLE(name) __guest_handle_ ## name
> #define XEN_GUEST_HANDLE(name) __XEN_GUEST_HANDLE(name)
> #define XEN_GUEST_HANDLE_PARAM(name) XEN_GUEST_HANDLE(name)
> -#define set_xen_guest_handle_raw(hnd, val) do { (hnd).p = val; } while (0)
> +#define set_xen_guest_handle_raw(hnd, val) do { (hnd).p = (val); } while (0)
> #define set_xen_guest_handle(hnd, val) set_xen_guest_handle_raw(hnd, val)
... spot anything HVM-specific in this change.
Jan
F
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