公开(公告)号：US20240427636A1

公开(公告)日：2024-12-26

申请号：US18213189

申请日：2023-06-22

Applicant: Intel Corporation

Inventor： Fangfei LIU ,  Carlos ROZAS ,  Thomas UNTERLUGGAUER ,  Scott CONSTABLE

IPC: G06F9/50

Abstract: An apparatus and method for securely reserving resources for trusted execution. For example, one embodiment of a processor comprises: a plurality of cores, each core of the plurality of cores to provide at least one logical processor of a plurality of logical processors; a first plurality of registers, each register of the first plurality of registers to associate a class of service (CLOS) value with a corresponding logical processor of the plurality of logical processors; a second plurality of registers, each register of the second plurality of registers to indicate a portion of a shared resource to be allocated to a corresponding CLOS value; a first control register of a first logical processor of the plurality of logical processors to be configured with a reserved CLOS value associated with a trusted control structure; resource reservation circuitry configurable by secure firmware or software to indicate a reserved portion of the shared resource associated with the reserved CLOS value; and enforcement circuitry to limit access to the reserved portion of the shared resource to threads or logical processors associated with the reserved CLOS value.