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Re: [XEN PATCH v3 05/12] x86/traps: address violations of MISRA C Rule 16.3


  • To: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Federico Serafini <federico.serafini@xxxxxxxxxxx>
  • From: Jan Beulich <jbeulich@xxxxxxxx>
  • Date: Mon, 1 Jul 2024 10:41:53 +0200
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  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx, consulting@xxxxxxxxxxx, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
  • Delivery-date: Mon, 01 Jul 2024 08:42:03 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 27.06.2024 02:52, Stefano Stabellini wrote:
> On Wed, 26 Jun 2024, Federico Serafini wrote:
>> Add break or pseudo keyword fallthrough to address violations of
>> MISRA C Rule 16.3: "An unconditional `break' statement shall terminate
>> every switch-clause".
>>
>> No functional change.
>>
>> Signed-off-by: Federico Serafini <federico.serafini@xxxxxxxxxxx>
>> ---
>> Changes in v3:
>> - use break instead of fallthrough.
>> ---
>>  xen/arch/x86/traps.c | 3 +++
>>  1 file changed, 3 insertions(+)
>>
>> diff --git a/xen/arch/x86/traps.c b/xen/arch/x86/traps.c
>> index 9906e874d5..d62598a4c2 100644
>> --- a/xen/arch/x86/traps.c
>> +++ b/xen/arch/x86/traps.c
>> @@ -1186,6 +1186,7 @@ void cpuid_hypervisor_leaves(const struct vcpu *v, 
>> uint32_t leaf,
>>  
>>      default:
>>          ASSERT_UNREACHABLE();
>> +        break;
> 
> FYI the ASSERT_UNREACHABLE is still being discussed

Could you clarify what this means for this patch and you R-b? Is it somehow
conditional upon the outcome of that discussion, and hence you'd rather not
see this patch go in yet?

> Other than that:
> 
> Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

Acked-by: Jan Beulich <jbeulich@xxxxxxxx>

Jan



 


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