Invention Grant
- Patent Title: Efficient address translation caching in a processor that supports a large number of different address spaces
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Application No.: US14761126Application Date: 2014-11-26
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Publication No.: US09727480B2Publication Date: 2017-08-08
- Inventor: Terry Parks , Colin Eddy , Viswanath Mohan , John D. Bunda
- Applicant: VIA ALLIANCE SEMICONDUCTOR CO., LTD.
- Applicant Address: CN Shanghai
- Assignee: VIA ALLIANCE SEMICONDUCTOR CO., LTD.
- Current Assignee: VIA ALLIANCE SEMICONDUCTOR CO., LTD.
- Current Assignee Address: CN Shanghai
- Agent E. Alan Davis; Eric W. Cernyar; James W. Huffman
- International Application: PCT/IB2014/003084 WO 20141126
- International Announcement: WO2016/012830 WO 20160128
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F13/00 ; G06F13/28 ; G06F12/0891 ; G06F12/1036 ; G06F12/1045 ; G06F15/78 ; G06F12/1027 ; G06F12/109

Abstract:
A processor includes translation-lookaside buffer (TLB) and a mapping module. The TLB includes a plurality of entries, wherein each entry of the plurality of entries is configured to hold an address translation and a valid bit vector, wherein each bit of the valid bit vector indicates, for a respective address translation context, the address translation is valid if set and invalid if clear. The TLB also includes an invalidation bit vector having bits corresponding to the bits of the valid bit vector of the plurality of entries, wherein a set bit of the invalidation bit vector indicates to simultaneously clear the corresponding bit of the valid bit vector of each entry of the plurality of entries. The mapping module generates the invalidation bit vector.
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