A memory access control method, device, memory controller and computer system

Abstract

Embodiments of the present invention provide a memory access control method, device, memory controller, and computer system; wherein the method includes: receiving an access request to memory; if a target memory segment corresponding to the access request is configured with an access authority, judging Whether the access request matches the access authority of the target memory segment, wherein at least one memory segment in the memory is configured with access authority; if the access request matches the access authority of the memory segment, the target memory segment is allowed to be accessed Execute the access request. The embodiment of the present invention can perform access control on the memory to improve the security of the memory; in a virtualization scenario, the embodiment of the present invention can configure the access authority to the memory segment of the virtual machine, and perform access control.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of memory access, and in particular, to a memory access control method, device, memory controller, and computer system. Background technique [0002] Memory is one of the important components in the physical host, it is the bridge to communicate with the CPU core. All programs in the physical host run in memory, so the performance of the memory has a great impact on the physical host. [0003] Generally, the memory can be accessed by the privileged program (such as the operating system) of the physical host without restrictions. If there is a vulnerability in the privileged program, malicious memory access will undoubtedly occur, posing a threat to the security of the memory. For example, in virtualization Under the technology, malicious memory access will affect the security of the memory of the virtual machine; therefore, how to control the memory access to improve the security of th...

AI Technical Summary

Problems solved by technology

[0003] Generally, the memory can be accessed by the privileged program (such as the operating system) of the physical host without restriction. If there is a vulnerability in the privileged program, malicious memory access will undoubtedly occur, which poses a threat to the security of the memory. For example, in virtualization Under the current technology, malicious memory access will affect the security of virtual machine memory; therefore, how to control memory access to improve memory security has become an urgent problem to be solved by those skilled in the art

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