Invention Grant
- Patent Title: Selective purging of PCI I/O address translation buffer
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Application No.: US15812120Application Date: 2017-11-14
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Publication No.: US10223283B2Publication Date: 2019-03-05
- Inventor: David F. Craddock , Thomas A. Gregg , Dan F. Greiner , Damian L. Osisek
- 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
- Agency: Cantor Colburn LLP
- Agent Steven Chiu
- Main IPC: G06F12/1045
- IPC: G06F12/1045 ; G06F12/1027 ; G06F13/42 ; G06F12/1009

Abstract:
Embodiments relate to enhancing a refresh PCI translation (RPCIT) instruction to refresh a translation lookaside buffer (TLB). A computer processor determines a request to purge a translation for a single frame of the TLB in response to executing an enhanced RPCIT instruction. The enhanced RPCIT instruction is configured to selectively perform one of a single-frame TLB refresh operation or a range-bounded TLB refresh operation. The computer processor determines an absolute storage frame based on a translation of a PCI virtual address in response to the request to purge a translation for a single frame of the TLB. The computer processor further performs the single-frame TLB refresh operation to purge the translation for the single frame.
Public/Granted literature
- US20180074972A1 SELECTIVE PURGING OF PCI I/O ADDRESS TRANSLATION BUFFER Public/Granted day:2018-03-15
Information query
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