topic Re:Does SGX V2 still have EPC limitation? in Intel® Software Guard Extensions (Intel® SGX)

Does SGX V2 still have EPC limitation?

Bronze_me — Fri, 26 Mar 2021 01:33:31 GMT

Hi, everyone,

SGX v2 supports allocating EPC memory dynamically,
However, is it still 128MB EPC for SGX v2?
I did not find any Intel official documents state the EPC size of SGX v2, maybe I miss some important documents.

Could someone give some hints? Thanks.

Re:Does SGX V2 still have EPC limitation?

JesusG_Intel — Fri, 26 Mar 2021 19:15:42 GMT

Hello h__yun,

SGX2 does not change the size of the EPC. With SGX2, the EPC size is still limited.

Sincerely,

Jesus G.

Intel Customer Support

Re: Re:Does SGX V2 still have EPC limitation?

Bronze_me — Sat, 27 Mar 2021 09:20:50 GMT

Hi, JesusG, thank you so much.
It seems that Intel had said that the EPC limitation will be solved in SGX V2? I am not sure.

Re: Does SGX V2 still have EPC limitation?

JesusG_Intel — Mon, 29 Mar 2021 22:56:08 GMT

Hello h__yun,

I'm not sure where you read that SGX2 solves the EPC limitation. Maybe what was meant was that SGX2 helps mitigate the EPC limitation, not that it eliminates it.

Sincerely,

Jesus G.

Intel Customer Support

Re:Does SGX V2 still have EPC limitation?

JesusG_Intel — Mon, 29 Mar 2021 23:52:42 GMT

This thread has been marked as answered and Intel will no longer monitor this thread. If you want a response from Intel in a follow-up question, please open a new thread.

Re: Re:Does SGX V2 still have EPC limitation?

Bronze_me — Sat, 10 Apr 2021 03:34:01 GMT

It seems Intel's new lce Lake processor overcomes EPC limitation, see the following links:

1. link1

2. link2