Patent · US Active

Preventing unintended loss of transactional data in hardware transactional memory systems

US8543775B2 · kind B2 · utility

5Cited by

7References

31Claims

0Family size

Assignee

Advanced Micro Devices, Inc. · US

Inventors

Jaewoong Chung · Suwon-si, KR
David S. Christie · Austin, US
Michael P. Hohmuth · Dresden, DE
Stephan Diestelhorst · Dresden, DE
Martin T. Pohlack · Dresden, DE
Luke Yen · Ayer, US

Key dates

Filing date	Dec 13, 2012
Grant date	Sep 24, 2013
Priority date	—
Expiry date	Dec 13, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG06F9/3854
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method and apparatus are disclosed for implementing early release of speculatively read data in a hardware transactional memory system. A processing core comprises a hardware transactional memory system configured to receive an early release indication for a specified word of a group of words in a read set of an active transaction. The early release indication comprises a request to remove the specified word from the read set. In response to the early release request, the processing core removes the group of words from the read set only after determining that no word in the group other than the specified word has been speculatively read during the active transaction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.