公开(公告)号：US20230229603A1

公开(公告)日：2023-07-20

申请号：US17565666

申请日：2021-12-30

Applicant: ADVANCED MICRO DEVICES, INC. ,  ATI TECHNOLOGIES ULC

Inventor： PHILIP NG ,  NIPPON RAVAL ,  DAVID A. KAPLAN ,  DONALD P. MATTHEWS, JR.

IPC: G06F13/10 ,  G06F12/084 ,  G06F12/1081

CPC classification number: G06F13/102 ,  G06F12/084 ,  G06F12/1081 ,  G06F2212/603

Abstract: Restricting peripheral device protocols in confidential compute architectures, the method including: receiving a first address translation request from a peripheral device supporting a first protocol, wherein the first protocol supports cache coherency between the peripheral device and a processor cache; determining that a confidential compute architecture is enabled; and providing, in response to the first address translation request, a response including an indication to the peripheral device to not use the first protocol.