发明名称 |
PROVIDING LOGICAL PARTIONS WITH HARDWARE-THREAD SPECIFIC INFORMATION REFLECTIVE OF EXCLUSIVE USE OF A PROCESSOR CORE |
摘要 |
Techniques for simulating exclusive use of a processor core amongst multiple logical partitions (LPARs) include providing hardware thread-dependent status information in response to access requests by the LPARs that is reflective of exclusive use of the processor by the LPAR accessing the hardware thread-dependent information. The information returned in response to the access requests is transformed if the requestor is a program executing at a privilege level lower than the hypervisor privilege level, so that each logical partition views the processor as though it has exclusive use of the processor. The techniques may be implemented by a logical circuit block within the processor core that transforms the hardware thread-specific information to a logical representation of the hardware thread-specific information or the transformation may be performed by program instructions of an interrupt handler that traps access to the physical register containing the information.
|
申请公布号 |
US2013179892(A1) |
申请公布日期 |
2013.07.11 |
申请号 |
US201213345002 |
申请日期 |
2012.01.06 |
申请人 |
FRAZIER GILES R.;MEALY BRUCE;NAYAR NARESH;INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
FRAZIER GILES R.;MEALY BRUCE;NAYAR NARESH |
分类号 |
G06F9/46;G06F13/24 |
主分类号 |
G06F9/46 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|