topic Re:SGX memory limit on i-series in Intel® Software Guard Extensions (Intel® SGX)

SGX memory limit on i-series

DebbieMilner — Thu, 28 Sep 2023 12:30:42 GMT

Hello Intel!

I'm developing a program to run in a trusted execution environment on i-series CPUs, and I'm wondering what the maximum enclave size for SGX is? There doesn't appear to be any public information on the memory capacity for enclaves on i-series CPUs before Icelake, which was 128MB.

I'd LOVE to know what the maximum capacities are for each of the 10-14th generation, i-series CPUs, to know which we can support!

Thanks!

Re:SGX memory limit on i-series

Aznie_Intel — Fri, 29 Sep 2023 09:25:42 GMT

Hi DebbieMilner,

Thanks for reaching out.

We are checking on this and will get back to you as soon as possible.

Regards,

Aznie

Re:SGX memory limit on i-series

Aznie_Intel — Tue, 03 Oct 2023 01:39:10 GMT

Hi DebbieMilner,

Thank you for your patience.

For your information, SGX is only supported until 10th Gen CPU. You can check if SGX is enabled on your system with this Test SGX command. Meanwhile, you may refer to this article to determine the EPC size.

Regards,

Aznie

Re: Re:SGX memory limit on i-series

DebbieMilner — Tue, 03 Oct 2023 02:02:42 GMT

Thanks for this Aznie,

To be clear: 10th gen has 128mb memory and SGX does not work on 11-14th generation i series cpus?

Re:SGX memory limit on i-series

Aznie_Intel — Tue, 03 Oct 2023 04:06:55 GMT

Hi DebbieMilner,

Yes, you are right. You may find a list of Intel processors supporting the Intel® SGX following the steps below:

For a complete list of Intel® processors that support Intel® SGX, visit Intel® Processors Supporting Intel® SGX

Click the processor and scroll down to the Security & Reliability section and look for Intel® Software Guard Extensions (Intel® SGX).

Find out if a specific processor supports Intel® SGX:

Go to product specifications (ARK).
Enter the processor number in the search specifications box in the top-right corner.
On the product specification page of the processor, click Security & Reliability and look for Intel® Software Guard Extensions (Intel® SGX)

In addition, you may read this Intel SGX information.

Regards,

Aznie

Re:SGX memory limit on i-series

Aznie_Intel — Tue, 10 Oct 2023 03:17:25 GMT

Hi DebbieMilner,

This thread will no longer be monitored since we have provided information. If you need any additional information from Intel, please submit a new question.

Regards,

Aznie