Invention Grant
- Patent Title: Dynamic translation lookaside buffer (TLB) invalidation using virtually tagged cache for load/store operations
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Application No.: US16941630Application Date: 2020-07-29
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Publication No.: US11263151B2Publication Date: 2022-03-01
- Inventor: David Campbell , Bryan Lloyd , David A. Hrusecky , Kimberly M. Fernsler , Jeffrey A. Stuecheli , Guy L. Guthrie , Samuel David Kirchhoff , Robert A. Cordes , Michael J. Mack , Brian Chen
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agent Teddi E. Maranzano
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F12/1045 ; G06F12/0891 ; G06F9/54 ; G06F9/30

Abstract:
Translation lookaside buffer (TLB) invalidation using virtual addresses is provided. A cache is searched for a virtual address matching the input virtual address. Based on a matching virtual address in the cache, the corresponding cache entry is invalidated. The load/store queue is searched for a set and a way corresponding to the set and the way of the invalidated cache entry. Based on an entry in the load/store queue matching the set and the way of the invalidated cache entry, the entry in the load/store queue is marked as pending. Indicating a completion of the TLB invalidate instruction is delayed until all pending entries in the load/store queues are complete.
Public/Granted literature
Information query