Re: [PATCH] perf/x86/intel: Annotate x86_pmu::hybrid_pmu with __counted_by_ptr

[Mi, Dapeng]

Reviewed-by: Dapeng Mi <dapeng1.mi@xxxxxxxxxxxxxxx>

Thanks.

On 9/4/2026 11:47 PM, Ian Rogers wrote:
> On Fri, Sep 4, 2026 at 7:17 AM Thorsten Blum <blum@xxxxxxxxxx> wrote:
>> Add __counted_by_ptr() to x86_pmu::hybrid_pmu to improve access bounds
>> checking via CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE.
>>
>> Signed-off-by: Thorsten Blum <blum@xxxxxxxxxx>
>> ---
>>  arch/x86/events/perf_event.h | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h
>> index 71ed5b2acea2..b66691a4fc31 100644
>> --- a/arch/x86/events/perf_event.h
>> +++ b/arch/x86/events/perf_event.h
>> @@ -1050,7 +1050,7 @@ struct x86_pmu {
>>          * unique capabilities.
>>          */
>>         int                             num_hybrid_pmus;
>> -       struct x86_hybrid_pmu           *hybrid_pmu;
>> +       struct x86_hybrid_pmu           *hybrid_pmu __counted_by_ptr(num_hybrid_pmus);
> Reviewed-by: Ian Rogers <irogers@xxxxxxxxxx>
>
> Thanks,
> Ian
>
>>         enum intel_cpu_type (*get_hybrid_cpu_type)      (void);
>>  };
>>