公开(公告)号：EP4435614A1

公开(公告)日：2024-09-25

申请号：EP23217049.8

申请日：2023-12-15

Applicant: INTEL Corporation

Inventor： Lawlor, Jay ,  Sheffield, David ,  Zou, Xiang ,  Kinney, Michael ,  Holthaus, Charles ,  Toll, Thomas ,  Yitbarek, Salessawi Ferede ,  Kleen, Andreas ,  Tiruvallur, Keshavan ,  Jayakumar, Sarathy ,  Ni, Ruiyu

IPC: G06F12/14 ,  G06F12/1009 ,  G06F9/4401

CPC classification number: G06F12/1009 ,  G06F2212/100420130101 ,  G06F2212/102820130101 ,  G06F12/1441 ,  G06F12/1491 ,  G06F9/4403 ,  G06F9/4405 ,  G06F2212/105620130101

Abstract: An apparatus and method for a more efficient system management mode. For example, one embodiment of a processor comprises: a plurality of cores, at least a first core of the plurality of cores to perform operations to cause the plurality of cores to enter into a system management mode (SMM), the operations comprising: allocating a memory region for a system management RAM (SMRAM); writing an SMRAM state save location to a first register; and generating a page table in the SMRAM, including mapping a virtual address space a physical address space.