公开(公告)号：US09891936B2

公开(公告)日：2018-02-13

申请号：US14039195

申请日：2013-09-27

Applicant: Intel Corporation

Inventor： Jiwei Oliver Lu ,  Koichi Yamada ,  James D. Beany ,  Palaniverlrajan Shanmugavelayutham ,  Bo Zhang

IPC: G06F12/00 ,  G06F9/455 ,  G06F12/10 ,  G06F12/1027

CPC classification number: G06F9/4552 ,  G06F12/10 ,  G06F12/1027 ,  G06F2212/682 ,  G06F2212/683

Abstract: An apparatus and method for page level monitoring are described. For example, one embodiment of a method for monitoring memory pages comprises storing information related to each of a plurality of memory pages including an address identifying a location for a monitor variable for each of the plurality of memory pages in a data structure directly accessible only by a software layer operating at or above a first privilege level; detecting virtual-to-physical page mapping consistency changes or other page modifications to a particular memory page for which information is maintained in the data structure; responsively updating the monitor variable to reflect the consistency changes or page modifications; checking a first monitor variable associated with a first memory page prior to execution of first program code; and refraining from executing the first program code if the first monitor variable indicates consistency changes or page modifications to the first memory page.