What is the cache size of memory encryption engine(MEE)?

Intel® Software Guard Extensions (Intel® SGX)

Discussion board focused on hardware-based isolation and memory encryption to provide extended code protection in solutions.

What is the cache size of memory encryption engine(MEE)?

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In the following document:

https://software.intel.com/sites/default/files/332680-002.pdf (Page 191)

There exits MEE cache to Sweeten the performance degradation. The cache will hold counters and versions which is accessed recently.

Is there anyone know how large the MEE cache is?

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