Intel® Software Guard Extensions (Intel® SGX)
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Intel TSX and SGX are not working together

JWChang
Beginner
754 Views

Hello,

I am trying to use Intel TSX (RTM) 'xbegin' and 'xend' instruction in the SGX Enclave.

But, whenever I tried, it always goes to 'abort' region. 

Does the TSX Instructions no longer available in the SGX Enclave? 

If the Micro-code is patched to not allow TSX instructions, is there any way to downgrade the micro-code patch or sth?

Thanks.

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7 Replies
AlHill
Super User
751 Views

What processor do you have?

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JWChang
Beginner
747 Views

 

I use Intel(R) Core(TM) i5-8500 CPU @ 3.00GHz

 

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JesusG_Intel
Moderator
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amy-zhang
Beginner
645 Views

It seems that  Intel TSX would abort inside the enclave in the hyperthreading-enabled processor.  Is this statement correct?

Another question is: will Intel enable TSX inside the enclave in the future?

Thanks a lot!

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amy-zhang
Beginner
643 Views

It seems that  Intel TSX would abort inside the enclave in the hyperthreading-enabled processor due to the TAA vulnerability.  Is this statement correct?

Another question is: will Intel enable TSX inside the enclave in the future?

Thanks a lot!

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JesusG_Intel
Moderator
623 Views

Hello amy-zhang,

I don't know enough about Intel TSX, TAA, and HT to answer your question. Please try asking your question in the Processors Community.

Regarding your second question, we cannot comment on future roadmaps.

Regards,

Jesus G.

Intel Customer Support

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JesusG_Intel
Moderator
621 Views

Intel is no longer monitoring this thread. If you want a response from Intel in a follow-up question, please open a new thread.

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