Page table reading method, device and equipment, and computer storage medium

Abstract

The invention provides a page table reading method, device and equipment, and a computer storage medium. The method comprises the following steps: obtaining the number of currently unused page tablesin a buffer when a physical address corresponding to a target virtual address is successfully queried in a page table in the buffer; judging whether the number of currently unused page tables in the buffer is enough to support query operation of conversion from a virtual address to a physical address within the time required for acquiring a page table behavior once or not; and if it is judged thatthe number of the currently unused page tables in the buffer is enough to support the time required for obtaining the page table behavior once, reading a preset number of page tables from a memory. Therefore, the purpose of hiding the delay of reading the page table from the memory so as to improve the processing performance of the chip is achieved.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to a method, device, device and computer storage medium for reading a page table. Background technique [0002] In the design of large-scale computing chips, there is a need for address virtualization management of memory. When using virtual addresses to read and write memory, it is necessary to convert virtual addresses into physical addresses. [0003] At present, in the process of converting a virtual address into a physical address, the existing page table is usually queried in the cache, and the physical address corresponding to the virtual address is queried according to the mapping data from the virtual address to the physical address recorded in the page table . However, when the existing page table of the cache is used up, the query of the page table of the cache will fail, thereby triggering a new read request to retrieve the page table to be used. The delay ...

AI Technical Summary

Problems solved by technology

However, when the existing page table of the cache is used up, the page table query of the cache will fail, and a new read request will be triggered to retrieve the page table to be used

The delay in sending a read request to the memory to read the page table is generally relatively long, which will cause a temporary interruption of the entire hardware pipeline, thereby affecting the processing performance of the entire chip

Images