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A memory access method, related device and system

A memory access and memory technology, applied in the computer field, can solve the problem of low memory access efficiency

Active Publication Date: 2018-11-30
HUAWEI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Embodiments of the present invention provide a memory access method, related device and system, which solve the problem of low memory access efficiency in the prior art

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  • A memory access method, related device and system
  • A memory access method, related device and system
  • A memory access method, related device and system

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Embodiment Construction

[0067] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0068] In the prior art, the page fault interrupt processing is bound to the hardware of the CPU. When the MMU cannot find the real address corresponding to the virtual address carried in the access request of the process from both the TLB and the memory, the page fault interrupt is triggered, and the CPU Perform page fault interrupt processing. After the CPU interrupt processing is completed, continue the access request of the process. Since the CPU takes a lo...

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Abstract

Provided are a memory access method, and a relevant device and system, which solve the problem in the prior art of a low memory access efficiency. The method comprises: receiving a memory access request message of a process, wherein the memory access request message comprises information about a virtual address corresponding to a memory that the process requests to access; acquiring a mapping relationship corresponding to the process from a preset mapping relationship set according to the process, the mapping relationship being a correlation between the virtual address and a memory controller (MC) corresponding to the memory that the process requests to access; acquiring the MC corresponding to the memory that the process requests to access according to the information about the virtual address and the mapping relationship; and sending the memory access request message to the MC. The method is applicable to the technical field of computers.

Description

technical field [0001] The present invention relates to the technical field of computers, in particular to a memory access method, a related device and a system. Background technique [0002] In the traditional memory management process, when the central processing unit (Central Processing Unit, CPU) initiates a memory access, it will first access its internal private cache (cache), at this time the CPU first sends the access request to the memory management inside the CPU Unit (Memory Management Unit, MMU), according to the virtual address information in the access request, the MMU searches for the real address corresponding to the virtual address in the transmission lookaside buffer (Translation Lookaside Buffer, TLB), that is, the physical address, and the CPU passes the physical address To access the private cache, when a cache miss occurs, that is, after the CPU fails to access the private cache, the CPU sends the memory access request to the memory controller (Memory C...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/02
CPCG06F12/02
Inventor 阮元陈明宇张立新
Owner HUAWEI TECH CO LTD