公开(公告)号：GB2494578B

公开(公告)日：2017-11-29

申请号：GB201222539

申请日：2011-05-25

Applicant: IBM

Inventor： JOHN BRUCE CARTER ,  LIXIN ZHANG ,  KARTHICK RAJAMANI ,  WILLIAM SPEIGHT ,  ELMOOTAZBELLAH NABIL ELNOZAHY ,  AHMED GHEITH ,  ERIC VAN HENSBERGEN

IPC: G06F9/54

公开(公告)号：GB2493614B

公开(公告)日：2018-12-05

申请号：GB201213214

申请日：2011-05-09

Applicant: IBM

Inventor： LIXIN ZHANG ,  WILLIAM SPEIGHT

IPC: G06F12/0815

公开(公告)号：GB2485328B

公开(公告)日：2016-07-13

申请号：GB201204882

申请日：2010-08-19

Applicant: IBM

Inventor： LIXIN ZHANG ,  JIANG LIN

IPC: G06F12/08 ,  G06F12/12

Abstract: A mechanism is provided in a virtual machine monitor for providing cache partitioning in virtualized environments. The mechanism assigns a virtual identification (ID) to each virtual machine in the virtualized environment. The processing core stores the virtual ID of the virtual machine in a special register. The mechanism also creates an entry for the virtual machine in a partition table. The mechanism may partition a shared cache using a vertical (way) partition and/or a horizontal partition. The entry in the partition table includes a vertical partition control and a horizontal partition control. For each cache access, the virtual machine passes the virtual ID along with the address to the shared cache. If the cache access results in a miss, the shared cache uses the partition table to select a victim cache line for replacement.