Intel Corporation

William Colin Wood

Vedvyas Shanbhogue

Uday R Savagaonkar

Carlos V Rozas

Barry E Huntley

Vincent R Scarlata

Ittai Anati

Simon P Johnson

Michael A Goldsmith

Rebekah M Leslie-Hurd

Gilbert A Neiger

Francis X Mckeen

Scott Dion Rodgers

Ilya Alexandrovich

Wesley Hamilton Smith

Rinat Rappoport

Alex Berenzon

Anton Ivanov

Shay Gueron

Francis McKeen

Instructions and logic provide advanced paging capabilities for secure enclave page caches. Embodiments include multiple hardware threads or processing cores, a cache to store secure data for a shared page address allocated to a secure enclave accessible by the hardware threads. A decode stage decodes a first instruction specifying said shared page address as an operand, and execution units mark an entry corresponding to an enclave page cache mapping for the shared page address to block creation of a new translation for either of said first or second hardware threads to access the shared page. A second instruction is decoded for execution, the second instruction specifying said secure enclave as an operand, and execution units record hardware threads currently accessing secure data in the enclave page cache corresponding to the secure enclave, and decrement the recorded number of hardware threads when any of the hardware threads exits the secure enclave.

Instructions and logic to provide advanced paging capabilities for secure enclave page caches

Embodiments of an invention for secure processing environment measurement and attestation are disclosed. In one embodiment, a processor includes an instruction unit and an execution unit. The instruction unit is to receive a first instruction associated with a build or a rebuild of a secure enclave. The execution unit is to execute the first instruction. Execution of the first instruction, when associated with the build, includes calculation of a first measurement and a second measurement of the secure enclave. Execution of the first instruction, when associated with the rebuild, includes calculation of the second measurement without calculation of the first measurement.

Secure processing environment measurement and attestation

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Hillsboro, OR, United States of America

William Colin Wood