公开(公告)号：US20180336134A1

公开(公告)日：2018-11-22

申请号：US15598837

申请日：2017-05-18

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Michael A. Blake ,  Timothy C. Bronson ,  Ashraf ElSharif ,  Kenneth D. Klapproth ,  Vesselina K. Papazova ,  Guy G. Tracy

IPC: G06F12/0817 ,  G06F12/0891

CPC classification number: G06F12/0817 ,  G06F12/0891 ,  G06F2212/1024 ,  G06F2212/60 ,  G06F2212/621

Abstract: Embodiments of the present invention are directed to a computer-implemented method for ownership tracking updates across multiple simultaneous operations. A non-limiting example of the computer-implemented method includes receiving, by a cache directory control circuit, a message to update a cache directory entry. The method further includes, in response, updating, by the cache directory control circuit, the cache directory entry, and generating a reverse compare signal including an updated ownership vector of a memory line corresponding to the cache directory entry. The method further includes sending the reverse compare signal to a cache controller associated with the cache directory entry.