Re: [Xen-devel] [PATCHv2 5/5] evtchn: pad struct evtchn to 64 bytes

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 16.06.15 at 13:14, <julien.grall@xxxxxxxxxx> wrote:
> On 15/06/2015 16:48, David Vrabel wrote:
>> diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
>> index 44ea92d..a0ff9d2 100644
>> --- a/xen/include/xen/sched.h
>> +++ b/xen/include/xen/sched.h
>> @@ -129,7 +129,7 @@ struct evtchn
>>   #endif
>>       } ssid;
>>   #endif
>> -};
>> +} __attribute__((aligned(64)));
> 
> Why don't you use __cacheline_aligned?

That would double the size on x86, for little or no benefit.

Jan


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