公开(公告)号：US20240061697A1

公开(公告)日：2024-02-22

申请号：US17820950

申请日：2022-08-19

Applicant: Intel Corporation

Inventor： RESHMA LAL ,  KRYSTOF ZMUDZINSKI ,  PRADEEP PAPPACHAN

IPC: G06F9/455

CPC classification number: G06F9/45558 ,  G06F9/45545 ,  G06F2009/45579 ,  G06F2009/45583

Abstract: An apparatus comprises a hardware processor to create an input/output control data structure (IOCS) for a trusted execution environment (TEE), allocate an input/output (I/O) address range comprising a host physical address (HPA) and a plurality of input/output (IO) pages to the input/output control structure, create an entry in the input/output control structure (IOCS) for a set of input/output (IO) pages and a device identifier for a remote device, set a pending bit to a first value which indicates that the remote device is authorized to access the input/output (I/O) address range, and grant the remote device access to the set of input/output pages in the input/output control structure upon verification of an input/output (IO) address range for the remote device.