Re: [XEN PATCH v3] arm/mem_access: add conditional build of mem_access.c

[Alessandro Zucchelli <alessandro.zucchelli@xxxxxxxxxxx>]

On 2024-05-10 22:59, Julien Grall wrote:
> Hi,
>
> On 10/05/2024 13:32, Alessandro Zucchelli wrote:
> > In order to comply to MISRA C:2012 Rule 8.4 for ARM the following
> > changes are done:
> > revert preprocessor conditional changes to xen/mem_access.h which
> > had it build unconditionally, add conditional build for 
> > xen/mem_access.c
> I am afraid, I don't understand this one as you don't seem to modify 
> xen/mem_access.h. Is this meant to be part of the changelog?
> You also don't seem to mention the change in Makefile. This is the one 
> I was asking for in the previous version. So what about:
> "xen/arm: mem_access: Conditionally compile mem_access.c
>
> Commit 634cfc8beb ("Make MEM_ACCESS configurable") intended to make 
> MEM_ACCESS configurable on Arm to reduce the code size when the user 
> doesn't need it.
> However, this didn't cover the arch specific code. None of the code in 
> arm/mem_access.c is necessary when MEM_ACCESS=n, so it can be compiled 
> out. This will require to provide some stub for functions called by the 
> common code.
> This is also fixing violation of the MISRA C:2012 Rule 8.4 reported by 
> ECLAIR.
> "
>
> The patch itself loks good so once we agree on the commit message, then 
> I am happy to update it on commit.
Hi,
Thanks for the feedback,
> I am afraid, I don't understand this one as you don't seem to modify 
> xen/mem_access.h. Is this meant to be part of the changelog?
you are right, this should be part of the changelog as it referes to the 
revert of a previous patch's changes.
I approve of the commit message you provided.

Cheers,

--
Alessandro Zucchelli, B.Sc.

Software Engineer, BUGSENG (https://bugseng.com)