topic Re:Do these processors support PKU ? in Mobile and Desktop Processors

Do these processors support PKU ?

qwqming — Mon, 26 Aug 2024 11:32:26 GMT

Hi, all.

I am trying to explore the Intel Memory Protection Key features during my experiments. I have devices, namely:

12th Gen Intel(R) Core(TM) i7-12700,

Intel(R) Xeon(R) CPU E5-2680 v4 @ 2.40GHz, and

Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz.

I checked /proc/cpuinfo, but on all these three processors there were not flags about "pku". Does it means that PKU is no longer supported on these processors?

Re:Do these processors support PKU ?

ACarmona_Intel — Tue, 03 Dec 2024 08:25:41 GMT

Hello qwqming,

Thank you for posting in our communities.

Intel MPX may be available in most Intel® 6th/7th/8th/9th Generation processors. However, 10th generation and newer processors on 10nm lithography no longer support this feature.

I have checked the three processors that you have shared, and only the i7-9750H has the feature of Intel MPX.

12th Gen Intel(R) Core(TM) i7-12700 - None
Intel(R) Xeon(R) CPU E5-2680 v4 @ 2.40GHz - None
Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz - Yes

To check if a processor has a feature of MPX, please refer to this link:

Support for Intel® Memory Protection Extensions (Intel® MPX) Technology

If you have any questions, please let me know.

Best regards,

Carmona A.

Intel Customer Support Technician

Re:Do these processors support PKU ?

ACarmona_Intel — Mon, 09 Dec 2024 02:14:05 GMT

Hello qwqming,

I would like to know if you have any questions regarding the information that I have provided.

If so, kindly inform me, as I would be glad to assist you.

Best regards,

Carmona A.

Intel Customer Support Technician

Re:Do these processors support PKU ?

ACarmona_Intel — Thu, 12 Dec 2024 06:22:11 GMT

Hello qwqming,

This is only a quick follow-up; I just wanted to check in with you, as I haven't received any feedback from you.

Thank you!

Best regards,

Carmona A.

Intel Customer Support Technician

Re:Do these processors support PKU ?

ACarmona_Intel — Mon, 16 Dec 2024 02:42:34 GMT

Hello qwqming,

I hope you are doing well.

Since I have not heard back from you, I will now be closing our case.

If, in case you are just busy and still needed assistance, please submit a new question on our community: https://community.intel.com/, as this thread will no longer be monitored.

Thank you.

Best regards,

Carmona A.

Intel Customer Support Technician