公开(公告)号：US20240320002A1

公开(公告)日：2024-09-26

申请号：US18375381

申请日：2023-09-29

Applicant: Intel Corporation

Inventor： Jay LAWLOR ,  David SHEFFIELD ,  Xiang ZOU ,  Michael KINNEY ,  Charles HOLTHAUS ,  Thomas TOLL ,  Salessawi Ferede YITBAREK ,  Andreas KLEEN ,  Keshavan TIRUVALLUR ,  Sarathy JAYAKUMAR ,  Ruiyu NI

IPC: G06F9/30 ,  G06F9/48 ,  G06F12/02 ,  G06F12/1009

CPC classification number: G06F9/30043 ,  G06F9/4812 ,  G06F12/0238 ,  G06F12/1009

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.

公开(公告)号：US20220206951A1

公开(公告)日：2022-06-30

申请号：US17134052

申请日：2020-12-24

Applicant: Intel Corporation

Inventor： Thomas TOLL ,  Ramya JAYARAM MASTI ,  Barry E. HUNTLEY ,  Vincent VON BOKERN ,  Siddhartha CHHABRA ,  Hormuzd M. KHOSRAVI ,  Vedvyas SHANBHOGUE ,  Gideon GERZON

IPC: G06F12/0895 ,  G06F12/06 ,  G06F9/455 ,  G06F21/53 ,  G06F12/14

Abstract: A method is described. The method includes executing a memory access instruction for a software process or thread. The method includes creating a memory access request for the memory access instruction having a physical memory address and a first identifier of a realm that the software process or thread execute from. The method includes receiving the memory access request and determining a second identifier of a realm from the physical memory address. The method also includes servicing the memory access request because the first identifier matches the second identifier.