Virtual machine tlb filling method, device and storage medium

Abstract

The present invention provides a TLB filling method, device and storage medium for a virtual machine. The method includes: obtaining a target virtual address to be filled into a TLB in a translation detection buffer, and identifying an identifier of a target process accessing the target virtual address; according to the target virtual address address and the identifier of the target process, obtain the target machine address corresponding to the target virtual address and the identifier of the target process from the shadow page table of the virtual machine, the shadow page table includes at least one mapping relationship of at least one virtual address, each virtual address The mapping relationship is used to indicate a combination corresponding to the virtual address, and the combination includes: the machine address and the process identifier; the mapping relationship between the identifier of the target process, the target virtual address, and the target machine address is filled in the TLB. The invention can solve the technical problem of how to realize the TLB filling of the virtual machine on the computer architecture that does not support the page table base address register in the prior art.

Description

technical field [0001] The present invention relates to computer technology, in particular to a TLB filling method, device and storage medium of a virtual machine. Background technique [0002] Xen is an open source hypervisor. In order to allow the memory of the physically existing computer (HOST) to be shared by different virtual machines running on the HOST, Xen introduces a layer of intermediate addresses between the virtual address and the physical address, called the "physical" address of the virtual machine. In this way, the operating system Guest OS running on the virtual machine can see the "physical" address of the virtual machine, but not the machine address of the HOST. [0003] The Guest page table, which maintains the mapping relationship between the GVA (virtual address) of each process and the GPA (the "physical" address of the virtual machine), is maintained in the Guest OS, and the GPA (the virtual machine's "physical" address) of each process is maintaine...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a TLB filling method, device and storage medium of a virtual machine, which are used to solve the technical problem of how to realize the TLB filling of a virtual machine on a computer architecture that does not support page table base address registers in the prior art

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