公开(公告)号：MY146723A

公开(公告)日：2012-09-14

申请号：MYPI20032123

申请日：2003-06-06

Applicant: INTEL CORP

Inventor： SUTTON JAMES A II ,  GEORGE ROBERT T ,  BURGESS BRADLEY G ,  GRAWROCK DAVID W ,  UHLIG RICHARD A ,  POISNER DAVID I ,  GLEW ANDREW F ,  HALL CLIFFORD D ,  SMITH LAWRENCE O III ,  GILBERT NEIGER ,  KOZUCH MICHAEL A

IPC: G06F9/46 ,  G06F1/00 ,  G06F12/14 ,  G06F9/48 ,  G06F21/00

Abstract: A SYSTEM AND METHOD FOR PERMITTING THE EXECUTION OF SYSTEM MANAGEMENT MODE (SMM) CODE DURING SECURE OPERATIONS IN A MICROPROCESSOR SYSTEM IS DESCRIBED. IN ONE EMBODIMENT, THE SYSTEM MANAGEMENT INTERRUPT (SMI) MAY BE FIRST DIRECTED TO A HANDLER IN A SECURED VIRTUAL MACHINE MONITOR (SVMM). THE SMI MAY THEN BE REDIRECTED TO SMM CODE LOCATED IN A VIRTUAL MACHINE (VM) THAT IS UNDER THE SECURITY CONTROL OF THE SVMM. THIS REDIRECTION MAY BE ACCOMPLISHED BY ALLOWING THE SVMM TO READ AND WRITE THE SYSTEM MANAGEMENT (SM) BASE REGISTER IN THE PROCESSOR.

公开(公告)号：MY137187A

公开(公告)日：2009-01-30

申请号：MYPI20031055

申请日：2003-03-25

Applicant: INTEL CORP

Inventor： GRAWROCK DAVID W ,  SUTTON JAMES A II

IPC: G06F1/00 ,  G06F21/00

Abstract: A METHOD AND APPARATUS FOR RESETTING AND MODIFYING SPECIAL REGISTERS IN A SECURITY TOKEN IS DESCRIBED. IN ONE EMBODIMENT, A REGISTER MAY BE RESET WHEN A RESET FLAG IS TRUE WHEN A SPECIAL TRANSMISSION ON A BUS DEMONSTRATES THE MUTUAL LOCALITY OF THE ASSOCIATED PROCESSOR AND CHIPSET. A MODIFY FLAG MAY ALSO BE USED TO INDICATE WHETHER THE REGISTER CONTENTS MAY BE MODIFIED. MODIFICATIONS MAY ALSO BE DEPENDENT UPON DEMONSTRATION OF MUTUAL LOCALITY.