公开(公告)号：US10409612B2

公开(公告)日：2019-09-10

申请号：US14998249

申请日：2015-12-26

Applicant: Intel Corporation

Inventor： Martin G. Dixon ,  Ravi Rajwar ,  Konrad K. Lai ,  Robert S. Chappell ,  Rajesh S. Parthasarathy ,  Alexandre J. Farcy ,  Ilhyun Kim ,  Prakash Math ,  Matthew Merten ,  Vijaykumar Kadgi

IPC: G06F9/30 ,  G06F9/38 ,  G06F12/0875 ,  G06F12/0897 ,  G06F13/16 ,  G06F13/40 ,  G06F12/084 ,  G06F12/0895 ,  G06F13/42 ,  G06F12/0831 ,  G06F9/52 ,  G06F12/0811 ,  G06F12/0862 ,  G06F12/1027 ,  G06F9/46 ,  G06F12/0815 ,  G06F12/1045 ,  G06F12/0806

Abstract: An apparatus and method is described herein for providing robust speculative code section abort control mechanisms. Hardware is able to track speculative code region abort events, conditions, and/or scenarios, such as an explicit abort instruction, a data conflict, a speculative timer expiration, a disallowed instruction attribute or type, etc. And hardware, firmware, software, or a combination thereof makes an abort determination based on the tracked abort events. As an example, hardware may make an initial abort determination based on one or more predefined events or choose to pass the event information up to a firmware or software handler to make such an abort determination. Upon determining an abort of a speculative code region is to be performed, hardware, firmware, software, or a combination thereof performs the abort, which may include following a fallback path specified by hardware or software. And to enable testing of such a fallback path, in one implementation, hardware provides software a mechanism to always abort speculative code regions.

公开(公告)号：US10409611B2

公开(公告)日：2019-09-10

申请号：US14998248

申请日：2015-12-26

Applicant: Intel Corporation

Inventor： Martin G. Dixon ,  Ravi Rajwar ,  Konrad K. Lai ,  Robert S. Chappell ,  Rajesh S. Parthasarathy ,  Alexandre J. Farcy ,  Ilhyun Kim ,  Prakash Math ,  Matthew Merten ,  Vijaykumar Kadgi

IPC: G06F9/30 ,  G06F9/38 ,  G06F12/0875 ,  G06F12/0897 ,  G06F13/16 ,  G06F13/40 ,  G06F12/084 ,  G06F12/0895 ,  G06F13/42 ,  G06F12/0831 ,  G06F9/52 ,  G06F12/0811 ,  G06F12/0862 ,  G06F12/1027 ,  G06F9/46 ,  G06F12/0815 ,  G06F12/1045 ,  G06F12/0806

Abstract: An apparatus and method is described herein for providing robust speculative code section abort control mechanisms. Hardware is able to track speculative code region abort events, conditions, and/or scenarios, such as an explicit abort instruction, a data conflict, a speculative timer expiration, a disallowed instruction attribute or type, etc. And hardware, firmware, software, or a combination thereof makes an abort determination based on the tracked abort events. As an example, hardware may make an initial abort determination based on one or more predefined events or choose to pass the event information up to a firmware or software handler to make such an abort determination. Upon determining an abort of a speculative code region is to be performed, hardware, firmware, software, or a combination thereof performs the abort, which may include following a fallback path specified by hardware or software. And to enable testing of such a fallback path, in one implementation, hardware provides software a mechanism to always abort speculative code regions.