The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 2024
Filed:
Mar. 22, 2023
Filtering remote data synchronization barrier (dsb) instruction execution in processor-based devices
Qualcomm Incorporated, San Diego, CA (US);
Adrian Montero, Austin, TX (US);
Paul Kitchin, Austin, TX (US);
Huzefa Sanjeliwala, Austin, TX (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Filtering remote data synchronization barrier (DSB) instruction execution in processor-based devices is disclosed herein. In some exemplary aspects, a processor-based device provides a plurality of processors including an issuing processor and a remote processor. The remote processor receives, from the issuing processor, a translation lookaside buffer (TLB) invalidation (TLBI) instruction indicating a request to invalidate a TLB entry of a plurality of TLB entries of a TLB of the remote processor. The remote processor also receives a DSB instruction from the issuing processor. The remote processor determines whether the TLBI instruction satisfies filtering criteria, which specify conditions under which execution of the DSB instruction by the remote processor is unnecessary. If the remote processor determines that the TLBI instruction satisfies the filtering criteria, the remote processor foregoes execution of a DSB operation corresponding to the DSB instruction, and issues an early DSB acknowledgement to the issuing processor.