Virtual machine memory management method and device

A device for managing virtual machine memory, comprising:

• a processor;
• a memory storing a computer program, which when executed by the processor, causes the processor to perform a virtual machine memory management method, the method comprising:
• identifying memory of a non-operating system of a virtual machine from total memory allocated to the virtual machine, wherein the total memory comprises memory of the virtual machine and management memory of a hypervisor, and the memory of the virtual machine comprises memory of an operating system of the virtual machine and the memory of the non-operating system of the virtual machine;
• designating the memory of the non-operating system of the virtual machine as swappable memory, wherein the swappable memory represents memory for which memory swapping is allowed, including:
• identifying, by the processor, the memory of the non-operating system of the virtual machine from the memory of the virtual machine,
• adding tag information to both the memory of the operating system of the virtual machine and the memory of the non-operating system of the virtual machine, wherein the tag information indicates that memory swapping is allowed for data in the tagged memory,
• deleting, by the processor, the tag information of the memory of the operating system of the virtual machine, and
• retaining, by the processor, the tag information of the memory of the non-operating system of the virtual machine, wherein the memory of the non-operating system of the virtual machine can be distinguished from other memory including the management memory of the hypervisor and the memory of the operating system of the virtual machine, wherein the memory of the non-operating system of the virtual machine is memory other than memory of the operating system of the virtual machine in the memory of the virtual machine;
• and
• in response to determining that a ratio of available memory pages remaining in physical memory of a physical host in which the virtual machine is located to total memory pages in the physical memory reaches a preset threshold, storing data in the swappable memory into a nonvolatile memory, wherein the swappable memory is part of the memory of the non-operating system of the virtual machine, wherein storing data in the swappable memory into a nonvolatile memory comprises:
• storing data in the memory with the tag information into a nonvolatile memory.

A computer device, comprising:

• at least one processor and a memory connected or coupled together through a bus, wherein the memory is configured to store one or more computer programs having instructions, which when executed by the at least one processor, cause the at least one processor to perform a method, the method comprising:
• identifying memory of a non-operating system of a virtual machine from total memory allocated to the virtual machine, wherein the total memory comprises memory of the virtual machine and management memory of a hypervisor, and the memory of the virtual machine comprises memory of an operating system of the virtual machine and the memory of the non-operating system of the virtual machine;
• designating the memory of the non-operating system of the virtual machine as swappable memory, including:
• identifying, by the processor, the memory of the non-operating system of the virtual machine from the memory of the virtual machine,
• adding tag information to both the memory of the operating system of the virtual machine and the memory of the non-operating system of the virtual machine, wherein the tag information indicates that memory swapping is allowed for data in the tagged memory,
• deleting, by the processor, the tag information of the memory of the operating system of the virtual machine, and
• retaining, by the processor, the tag information of the memory of the non-operating system of the virtual machine, wherein the memory of the non-operating system of the virtual machine can be distinguished from other memory including the management memory of the hypervisor and the memory of the operating system of the virtual machine, wherein the swappable memory represents memory for which memory swapping is allowed, wherein the memory of the non-operating system of the virtual machine is memory other than memory of the operating system of the virtual machine in the memory of the virtual machine;
• and
• in response to determining that a ratio of available memory pages remaining in physical memory of a physical host in which the virtual machine is located to total memory pages in the physical memory reaches a preset threshold, storing data in the swappable memory into a nonvolatile memory, wherein the swappable memory is part of the memory of the non-operating system of the virtual machine, wherein storing data in the swappable memory into a nonvolatile memory comprises:
• storing data in the memory with the tag information into a nonvolatile memory.