Invention Grant
- Patent Title: Adaptive extension of leases for entries in a translation lookaside buffer
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Application No.: US15361335Application Date: 2016-11-25
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Publication No.: US10261916B2Publication Date: 2019-04-16
- Inventor: Amro Awad , Sergey Blagodurov , Arkaprava Basu , Mark H. Oskin , Gabriel H. Loh , Andrew G. Kegel , David S. Christie , Kevin J. McGrath
- Applicant: Advanced Micro Devices, Inc.
- Applicant Address: US CA Santa Clara
- Assignee: ADVANCED MICRO DEVICES, INC.
- Current Assignee: ADVANCED MICRO DEVICES, INC.
- Current Assignee Address: US CA Santa Clara
- Agency: Park, Vaughan, Fleming & Dowler LLP
- Main IPC: G06F12/10
- IPC: G06F12/10 ; G06F12/1036 ; G06F12/1009 ; G06F12/1027

Abstract:
The described embodiments include a computing device with two or more translation lookaside buffers (TLB). During operation, the computing device updates an entry in the TLB based on a virtual address to physical address translation and metadata from a page table entry that were acquired during a page table walk. The computing device then computes, based on a lease length expression, a lease length for the entry in the TLB. Next, the computing device sets, for the entry in the TLB, a lease value to the lease length, wherein the lease value represents a time until a lease for the entry in the TLB expires, wherein the entry in the TLB is invalid when the associated lease has expired. The computing device then uses the lease value to control operations that are allowed to be performed using information from the entry in the TLB.
Public/Granted literature
- US20170277639A1 Adaptive Extension of Leases for Entries in a Translation Lookaside Buffer Public/Granted day:2017-09-28
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