Running AMX instructions inside SGX Enclave

jk123 — Fri, 12 Apr 2024 20:15:24 GMT

I am trying to execute an AMX instruction inside an SGX enclave. I am using RHEL 9.3. I have confirmed that I can run an AMX instruction outside of an enclave, but not inside it when initializing AMX outside of the enclave. Executing the enclaved code returns error code 0x1006. I can't reinitialize AMX inside the enclave because it requires a system call, and system calls are impossible inside an SGX enclave. Is there any way to run AMX inside an enclave? I have attached a minimal reproducible example.

It is based off the code here and here

Re: Running AMX instructions inside SGX Enclave

Scott_R_Intel — Fri, 12 Apr 2024 20:32:07 GMT

Hello.

Please see our latest SGX Developer Reference. It talks about how to enable AMX in an enclave.

Regards.

topic Re: Running AMX instructions inside SGX Enclave in Intel® Software Guard Extensions (Intel® SGX)

Running AMX instructions inside SGX Enclave

Re: Running AMX instructions inside SGX Enclave