公开(公告)号：US20230393993A1

公开(公告)日：2023-12-07

申请号：US17830730

申请日：2022-06-02

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： RICHARD A BRAMLEY ,  BARANEEDHARAN ANBAZHAGAN ,  VALIUDDIN ALI

IPC: G06F12/14 ,  G06F12/02

CPC classification number: G06F12/1416 ,  G06F2212/7207 ,  G06F2212/1052 ,  G06F12/0246

Abstract: An example non-transitory computer readable storage medium comprising instructions that when executed cause a processor of a computing device to: in response to a trigger of a system management mode (SMM), verify all processor threads have been pulled into the SMM; in response to a successful verification, enable write access to a non-volatile memory of the computing device via two registers, where the writing access is disabled upon booting of the computing device; and upon exiting the SMM, disable the write access via the two registers.