公开(公告)号：US20180307829A1

公开(公告)日：2018-10-25

申请号：US15818783

申请日：2017-11-21

Applicant: VMWARE, INC.

Inventor： ALOK NEMCHAND KATARIA ,  DOUG COVELLI ,  JEFFREY W. SHELDON ,  FREDERICK JOSEPH JACOBS ,  DAVID DUNN

IPC: G06F21/53 ,  G06F3/06 ,  G06F9/455

CPC classification number: G06F21/53 ,  G06F3/0604 ,  G06F3/0634 ,  G06F3/0644 ,  G06F3/0664 ,  G06F3/0673 ,  G06F9/45558 ,  G06F2009/45579 ,  G06F2009/45583 ,  G06F2009/45587 ,  G06F2221/2149

Abstract: Techniques for securely supporting a global view of system memory in a physical/virtual computer system comprising a plurality of physical/virtual CPUs are provided. In one set of embodiments, the physical/virtual computer system can receive an interrupt indicating that a first physical/virtual CPU should enter a privileged CPU operating mode. The physical/virtual computer system can further determine that none of the plurality of physical/virtual CPUs are currently in the privileged CPU operating mode. In response to this determination, the physical/virtual computer system can modify the global view of system memory to include a special memory region comprising program code to be executed while in the privileged CPU operating mode; communicate, to the other physical/virtual CPUs, a signal to enter a stop state in which execution is halted but interrupts are accepted for entering the privileged CPU operating mode; and cause the first physical/virtual CPU to enter the privileged CPU operating mode.