Method and Apparatus for Querying Physical Memory Address

摘要

A method and an apparatus for querying a physical memory address where the method includes storing, into a prefetch buffer, page table entries of a second thread that is to perform addressing that are stored in a standby buffer, where the standby buffer stores page table entries that are not queried within a set time in a translation lookaside buffer (TLB), receiving a memory addressing request message that carries a virtual address and is sent by the second thread, and querying, in the TLB and the prefetch buffer, a corresponding physical address according to the virtual address.

主权项

1. A method for querying a physical address to access a memory, comprising:
storing, into a prefetch buffer, page table entries of a second thread that are stored in a standby buffer when determining that a memory addressing operation will be switched from a first thread to the second thread within a future set time, wherein the standby buffer stores page table entries that are not queried within a set time in a translation lookaside buffer (TLB); receiving a memory addressing request message corresponding to the second thread, wherein the memory addressing request message carries a virtual address; and querying, according to the virtual address, in page table entries stored in the TLB and the page table entries stored in the prefetch buffer, a physical address corresponding to the virtual address.