US 10,481,936 B2 · Efficient virtual machine memory monitoring with hyper-threading

Abstract

A system and method for efficient virtual machine memory monitoring with hyper-threading includes executing, by a hypervisor executing on a plurality of physical processors, a virtual central processor unit (VCPU) of a virtual machine on a first hyper-thread. The plurality of physical processors include a first physical processor having the first hyper-thread and a second hyper-thread. The virtual machine executes on the first hyper-thread. Then, the second hyper-thread executes a memory monitoring instruction on a designated range of a shared memory to cause the second hyper-thread to stop executing. Then, a guest in the virtual machine updates the designated range of the shared memory by storing a first request in the designated range of the shared memory to wake up the second hyper-thread.

Claims20

Dependent claims

A method comprising:

executing, by a hypervisor executing on a plurality of physical processors, a virtual central processor unit (VCPU) of a virtual machine, wherein the plurality of physical processors include a first physical processor having a first hyper-thread and a second hyper-thread, wherein the VCPU executes on the first hyper-thread;
executing, by the second hyper-thread, a memory monitoring instruction on a designated range of a shared memory to cause the second hyper-thread to stop executing;
and updating, by a guest in the virtual machine, the designated range of the shared memory by storing a first request in the designated range of the shared memory to wake up the second hyper-thread, wherein the first request is processed by a third hyper-thread.

A system comprising:

a shared memory;
a plurality of physical processors in communication with the shared memory, wherein the plurality of physical processors include a first physical processor having a first hyper-thread and a second hyper-thread;
a virtual machine to execute on the first hyper-thread, wherein the virtual machine includes a virtual central processor unit (VCPU);
and a hypervisor to execute on the plurality of physical processors to execute the VCPU on the first hyper-thread, wherein the second hyper-thread executes a memory monitoring instruction on a designated range of the shared memory to cause the second hyper-thread to stop executing, wherein a guest in the virtual machine updates the designated range of the shared memory by storing a first request in the designated range of the shared memory to wake up the second hyper-thread, wherein the first request is processed by a third hyper-thread.

1 more element

Dependencies are inferred from the claim text.

Efficient virtual machine memory monitoring with hyper-threading

Life of this patent

Efficient virtual machine memory monitoring with hyper-threading

Life of this patent

Abstract

Claims20