公开(公告)号：US09323600B2

公开(公告)日：2016-04-26

申请号：US14486776

申请日：2014-09-15

Applicant: Oracle International Corporation

Inventor： Ramaswamy Sivaramakrishnan ,  Ali Vahidsafa ,  Aaron S. Wynn ,  Connie W. Cheung

IPC: G06F11/00 ,  G06F11/07 ,  G06F11/16 ,  G06F12/08 ,  G06F12/12 ,  G06F9/30 ,  G06F11/20

CPC classification number: G06F11/0793 ,  G06F9/30 ,  G06F9/30047 ,  G06F11/073 ,  G06F11/1666 ,  G06F11/20 ,  G06F12/0804 ,  G06F12/0844 ,  G06F12/0891 ,  G06F12/126 ,  G06F2212/1008 ,  G06F2212/1032

Abstract: The systems and methods described herein may provide a flush-retire instruction for retiring “bad” cache locations (e.g., locations associated with persistent errors) to prevent their allocation for any further accesses, and a flush-unretire instruction for unretiring cache locations previously retired. These instructions may be implemented as hardware instructions of a processor. They may be executable by processes executing in a hyper-privileged state, without the need to quiesce any other processes. The flush-retire instruction may atomically flush a cache line implicated by a detected cache error and set a lock bit to disable subsequent allocation of the corresponding cache location. The flush-unretire instruction may atomically flush an identified cache line (if valid) and clear the lock bit to re-enable subsequent allocation of the cache location. Various bits in the encodings of these instructions may identify the cache location to be retired or unretired in terms of the physical cache structure.

Abstract translation: 本文描述的系统和方法可以提供用于退出“不良”高速缓存位置（例如，与持续错误相关联的位置）的刷新退出指令，以防止其对任何进一步访问的分配，以及用于撤销先前退休的高速缓存位置的刷新指令 。 这些指令可以被实现为处理器的硬件指令。 它们可以由以超级特权状态执行的进程执行，而不需要使任何其他进程停顿。 刷新 - 退出指令可以原子地刷新由检测到的高速缓存错误所牵连的高速缓存行，并设置锁定位以禁用对应的高速缓存位置的后续分配。 flush-unretire指令可以原子地刷新已识别的高速缓存行（如果有效）并清除锁定位以重新启用高速缓存位置的后续分配。 这些指令的编码中的各个比特可以根据物理高速缓存结构来标识要退休或未退出的高速缓存位置。

公开(公告)号：US20150039938A1

公开(公告)日：2015-02-05

申请号：US14486776

申请日：2014-09-15

Applicant: ORACLE INTERNATIONAL CORPORATION

Inventor： Ramaswamy Sivaramakrishnan ,  Ali Vahidsafa ,  Aaron S. Wynn ,  Connie W. Cheung

IPC: G06F11/07 ,  G06F12/08

CPC classification number: G06F11/0793 ,  G06F9/30 ,  G06F9/30047 ,  G06F11/073 ,  G06F11/1666 ,  G06F11/20 ,  G06F12/0804 ,  G06F12/0844 ,  G06F12/0891 ,  G06F12/126 ,  G06F2212/1008 ,  G06F2212/1032

Abstract: The systems and methods described herein may provide a flush-retire instruction for retiring “bad” cache locations (e.g., locations associated with persistent errors) to prevent their allocation for any further accesses, and a flush-unretire instruction for unretiring cache locations previously retired. These instructions may be implemented as hardware instructions of a processor. They may be executable by processes executing in a hyper-privileged state, without the need to quiesce any other processes. The flush-retire instruction may atomically flush a cache line implicated by a detected cache error and set a lock bit to disable subsequent allocation of the corresponding cache location. The flush-unretire instruction may atomically flush an identified cache line (if valid) and clear the lock bit to re-enable subsequent allocation of the cache location. Various bits in the encodings of these instructions may identify the cache location to be retired or unretired in terms of the physical cache structure.

Abstract translation: 本文描述的系统和方法可以提供用于退出“不良”高速缓存位置（例如，与持续错误相关联的位置）的刷新退出指令，以防止其对任何进一步访问的分配，以及用于撤销先前退休的高速缓存位置的刷新指令 。 这些指令可以被实现为处理器的硬件指令。 它们可以由以超级特权状态执行的进程执行，而不需要使任何其他进程停顿。 刷新 - 退出指令可以原子地刷新由检测到的高速缓存错误所牵连的高速缓存行，并设置锁定位以禁用对应的高速缓存位置的后续分配。 flush-unretire指令可以原子地刷新已识别的高速缓存行（如果有效）并清除锁定位以重新启用高速缓存位置的后续分配。 这些指令的编码中的各个比特可以根据物理高速缓存结构来标识要退休或未退出的高速缓存位置。