RE: [PATCH v8: 1/4] x86/msr: Add MSR_MISC_FEATURE_ENABLES and PHIR3MWAIT bit

From: Andrejczuk, Grzegorz
Date: Fri Nov 04 2016 - 02:47:10 EST


>>On Tue, 1 Nov 2016, Grzegorz Andrejczuk wrote:
>>
>> +/* Intel Xeon Phi x200 ring 3 MONITOR/MWAIT */
>
>Oh well. I asked you to make that whole PHI thing go away.
>
>This is a feature which has nothing to do with PHI. It just happens to be implemented on PHI. The FEATURES_ENABLES MSR is not at all PHI specific.
>
>It's all about a feature which enables ring 3 mwait/monitor.

This bit enables ring 3 MONITOR/MWAIT only on Xeon Phi. It is reserved for other architectures.
I think this will be confusing when I remove PHI.

>> +#define MSR_MISC_FEATURE_ENABLES 0x00000140
>> +#define MSR_MISC_FEATURE_ENABLES_PHIR3MWAIT_BIT 1
>> +#define MSR_MISC_FEATURE_ENABLES_PHIR3MWAIT (1ULL << MSR_MISC_FEATURE_ENABLES_PHIR3MWAIT_BIT)
>> +
>
>You really try hard to get your crap behind me. Stop sending out half baken shit every other day without addressing my review comments.
>
>Your trust level approaches negative space.
>
>Thanks,
>
> tglx

Regards,
Grzegorz