topic PKS: Supervisor Protection Key support on 13th intel? in Mobile and Desktop Processors

PKS: Supervisor Protection Key support on 13th intel?

purplewall1206 — Wed, 12 Apr 2023 23:28:57 GMT

Hello intel community, I am a researcher need intel Supervisor Mode Protection Key feature,

I would like to know if 13th CPU support PKS feature? and which CPU do support.

I have just bought a 13th i7 but seems not support, I used to have a 12th i512600k CPU support PKS.

Thank you so much!

Re: PKS: Supervisor Protection Key support on 13th intel?

purplewall1206 — Wed, 12 Apr 2023 23:33:00 GMT

btw, CPUID output when RAX=07H, RCX=0x184027a4

It does support PKU, but I need PKS(supervisor)

Re:PKS: Supervisor Protection Key support on 13th intel?

Alberto_R_Intel — Thu, 13 Apr 2023 17:20:47 GMT

purplewall1206, Thank you for posting in the Intel® Communities Support.

We will be more than glad to assist you with this matter.

In order for us to provide the most accurate response and assistance for this scenario, I will do further research on this matter. For us to be able to do that, even though you are looking to find all the 13th gen processors that support PKS(supervisor), please provide the complete model of your 13th i7 processor so we can further assist you on this subject.

Any questions, please let me know.

Regards,

Albert R.

Intel Customer Support Technician

Re: PKS: Supervisor Protection Key support on 13th intel?

purplewall1206 — Thu, 13 Apr 2023 17:51:01 GMT

Hi Albert,

Thank you for the reply, we bought the 13th Gen Intel® Core™ i7-13700 processor (16-Core, 24MB Cache, 2.1GHz to 5.1GHz)

and the whole set is dell inspiron desktop .

After we received the desktop, we use `__cpuid` function in `intrin.h` to query the `ecx` value when `eax == 07H` according to the intel manual `cpuid` chapter.

the bit31 is not 1, which means PKS is not support.

Thank you,

purplewall1206

Re:PKS: Supervisor Protection Key support on 13th intel?

Alberto_R_Intel — Fri, 14 Apr 2023 20:17:20 GMT

Hi purplewall1206, You are very welcome, thank you very much for providing that information.

Thank you also for clarifying those details. We will now do further research on this matter. As soon as I get any updates, I will post all the details on this thread.

Regards,

Albert R.

Intel Customer Support Technician

Re:PKS: Supervisor Protection Key support on 13th intel?

Alberto_R_Intel — Fri, 26 May 2023 19:25:18 GMT

Hello purplewall1206, I just received an update on this matter.

After reviewing the case we can confirm that the Intel® 13th-generation processors do not support PKS feature. The same applies to other Intel® processor generations as well.

Regards,

Albert R.

Intel Customer Support Technician

Re:PKS: Supervisor Protection Key support on 13th intel?

Andres_Intel — Thu, 01 Jun 2023 17:53:25 GMT

Hello purplewall1206,

Were you able to check the previous post?

Let us know if you still need assistance.

Best regards,

Andres P.

Intel Customer Support Technician

Re:PKS: Supervisor Protection Key support on 13th intel?

Andres_Intel — Tue, 06 Jun 2023 16:17:38 GMT

Hello urplewall1206,

We have not heard back from you, so we will close this thread. If you need any additional information, please submit a new question as this thread will no longer be monitored.

Best regards,

Andres P.

Intel Customer Support Technician