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Re: [PATCH] xen: add deviations for MISRA C 2012 Rule R5.4
- To: Alessandro Zucchelli <alessandro.zucchelli@xxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 13 Nov 2024 11:44:17 +0100
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- Cc: consulting@xxxxxxxxxxx, Simone Ballarin <simone.ballarin@xxxxxxxxxxx>, Doug Goldstein <cardoe@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 13 Nov 2024 10:44:29 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 13.11.2024 10:38, Alessandro Zucchelli wrote:
> This addresses violations of MISRA C:2012 Rule 5.4 which states as
> following: Macro identifiers shall be distinct.
>
> This deviation aims to address violations of Rule 5.4 regarding
> identifiers XLAT_hvm_altp2m_set_mem_access_multi_HNDL_pfn_list and
> XLAT_hvm_altp2m_set_mem_access_multi_HNDL_access_list, and identifiers
> declared in header file include/asm/guest/hyperv-tlfs.h.
Please can you provide enough context? The two identifiers are quite
obviously distinct. Just not in the first 40 characters. A limit I had
to actually go look up, because it's entirely arbitrary.
Plus - what are we going to do if further such identifiers appear?
Exclude them one by one? That wouldn't really scale. Can we perhaps
make a wider exception, e.g. at least for all XLAT_*_HDNL_* ones? Then
again part of the problem here is that hvm_altp2m_set_mem_access_multi
is already excessively long, alone taking up 31 characters.
Jan
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