Intel® Software Guard Extensions (Intel® SGX)
Use hardware-based isolation and memory encryption to provide more code protection in your solutions.

SGX and hyperthreading with executors

Edwardbr
Beginner
427 Views

Hi I am interested in running executors inside enclaves.  This is a piece of code that runs permanently in a loop picking up pieces of work and executing them. 

Currently I have hyperthreading turned off due to spectre concerns.  If I were to have them enabled and if both threads in that core were running the same executor loop in the same enclave, and if they were never leaving the enclave in a return or an ocall.  Would the recommendations on disabling hyperthreading because of hardware attacks no longer apply?

If so how would I know that both hyperthreads are running in the same enclave before I started executing sensitive data?

Regards

Edward

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2 Replies
JesusG_Intel
Moderator
402 Views

Hello Edwardbr,


We are looking into your issue and will respond as soon as we have an answer.


JesusG_Intel
Moderator
345 Views

Hello Edwardbr,


Unfortunately, I have not been able to get a response from engineering. If I get a response, I will update this thread.


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