# US 2025/0085997 A1 · Multi-os heterogeneous virtual machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0085997 A1 - Document ID: US20250085997A1 - Status: Published application - Kind: A1 - Application number: 18/466,800 - Filed: 2023-09-13 - Published: 2025-03-13 - Earliest claimed: 2023-09-13 - Assignees: Hewlett Packard Enterprise Development LP - Applicants: Hewlett Packard Enterprise Development LP - Inventors: Kenneth Eugene James; James R. Hamrick, JR. - Web page: https://patentgrep.com/patent/US20250085997A1 ## CPC - G06F 9/45558: {Hypervisor-specific management and integration aspects} - G06F 2009/45579: {I/O management, e.g. providing access to device drivers or storage} - G06F 2009/45583: {Memory management, e.g. access or allocation} - G06F 2009/45595: {Network integration; Enabling network access in virtual machine instances} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A system for running a virtual machine (VM) on a host device is provided. During operation, the system can execute, within the VM, a first operating system (OS) running a client application and a second OS running a network protocol stack. The first OS can receive a transaction command from the client application. The transaction command can be associated with a remote memory access. The first OS can then convert the transaction command to one or more network packets and provide a description of the one or more network packets to the second OS via a shared guest physical memory of the VM. The host device can then send the one or more network packets to a corresponding destination based on the network protocol stack. ## Claims ### Claim 1 A method comprising: executing, within a virtual machine (VM) operating on a host device, a first operating system (OS) running a client application and a second OS running a network protocol stack; receiving, by the first OS, a transaction command from the client application, wherein the transaction command is associated with a remote memory access; converting, by the first OS, the transaction command to one or more network packets; providing, by the first OS, a description of the one or more network packets to the second OS via a shared guest physical memory of the VM; and sending, by the host device, the one or more network packets to a corresponding destination based on the network protocol stack. ### Claim 2 (depends on 1) The method of claim 1, wherein the remote memory access is based on Remote Direct Memory Access (RDMA), and wherein the transaction command includes an RDMA transaction. ### Claim 3 (depends on 1) The method of claim 1, wherein a guest physical memory presented to the VM is partitioned into a plurality of segments comprising a first memory segment used by the first OS, a second memory segment used by the second OS, and the shared guest physical memory accessible by the first OS and the second OS. ### Claim 4 (depends on 1) The method of claim 1, wherein the VM provides a plurality of virtual processing units, wherein the first OS executes on a first subset of the plurality of virtual processing units, and wherein the second OS executes on a second subset of the plurality of virtual processing units. ### Claim 5 (depends on 4) The method of claim 4, wherein providing, by the first OS, the one or more network packets further comprises: issuing, by the first OS, an inter-processor interrupt; and obtaining, by the second OS, the one or more network packets via the shared guest physical memory based on the interrupt. ### Claim 6 (depends on 5) The method of claim 5, further comprising: enqueueing, by the first OS, the description of the one or more network packets in a queue in the shared guest physical memory; and dequeuing, by the second OS, the description from the queue. ### Claim 7 (depends on 1) The method of claim 1, further comprising: running, by the first OS, a virtual network interface controller (NIC) operable based on the remote memory access; and receiving, by the virtual NIC, the transaction command from the client application by emulating the remote memory access. ### Claim 8 (depends on 7) The method of claim 7, further comprising: determining, by the virtual NIC, an address of the corresponding destination based on the transaction command; and generating, by the virtual NIC, the one or more network packets by incorporating the address. ### Claim 9 (depends on 1) The method of claim 1, further comprising providing, using a NIC driver running on the second OS, the one or more network packets from the network protocol stack to a physical NIC of the host device, wherein the physical NIC transmits the one or more network packets. ### Claim 10 (depends on 1) The method of claim 1, wherein the corresponding destination includes a virtual NIC operable based on the remote memory access. ### Claim 11 A non-transitory computer-readable storage medium storing instructions that when executed by a processor of a host device cause the processor to perform a method, the method comprising: operating a virtual machine (VM) on a virtual machine manager (VMM) running on the host device; executing, within the VM, a first operating system (OS) running a client application and a second OS running a network protocol stack; receiving, by the first OS, a transaction command from the client application, wherein the transaction command is associated with a remote memory access; converting, by the first OS, the transaction command to one or more network packets; providing, by the first OS, a description of the one or more network packets to the second OS via a shared guest physical memory of the VM; and sending, by the host device, the one or more network packets to a corresponding destination based on the network protocol stack. ### Claim 12 (depends on 11) The non-transitory computer-readable storage medium of claim 11, wherein the remote memory access is based on Remote Direct Memory Access (RDMA), and wherein the transaction command includes an RDMA transaction. ### Claim 13 (depends on 11) The non-transitory computer-readable storage medium of claim 11, wherein a guest physical memory presented to the VM is partitioned into a plurality of segments comprising a first memory segment used by the first OS, a second memory segment used by the second OS, and the shared guest physical memory accessible by the first OS and the second OS. ### Claim 14 (depends on 11) The non-transitory computer-readable storage medium of claim 11, wherein the VM provides a plurality of virtual processing units, wherein the first OS executes on a first subset of the plurality of virtual processing units, and wherein the second OS executes on a second subset of the plurality of virtual processing units. ### Claim 15 (depends on 14) The non-transitory computer-readable storage medium of claim 14, wherein providing, by the first OS, the one or more network packets further comprises: issuing, by the first OS, an inter-processor interrupt; and obtaining, by the second OS, the one or more network packets via the shared guest physical memory based on the interrupt. ### Claim 16 (depends on 15) The non-transitory computer-readable storage medium of claim 15, wherein the method further comprises: enqueueing, by the first OS, the description of the one or more network packets in a queue in the shared guest physical memory; and dequeuing, by the second OS, the description from the queue. ### Claim 17 (depends on 11) The non-transitory computer-readable storage medium of claim 11, wherein the method further comprises: running, by the first OS, a virtual network interface controller (NIC) operable based on the remote memory access; and receiving, by the virtual NIC, the transaction command from the client application by emulating the remote memory access. ### Claim 18 (depends on 17) The non-transitory computer-readable storage medium of claim 17, wherein the method further comprises: determining, by the virtual NIC, an address of the corresponding destination based on the transaction command; and generating, by the virtual NIC, the one or more network packets by incorporating the address. ### Claim 19 (depends on 11) The non-transitory computer-readable storage medium of claim 11, further wherein the method further comprises providing, using a NIC driver running on the second OS, the one or more network packets from the network protocol stack to a physical NIC of the host device, wherein the physical NIC transmits the one or more network packets. ### Claim 20 A computer system, comprising: a processor; a memory device; a set of ports; and a network interface controller (NIC); control circuitry comprising: a virtualization logic block is to run a virtual machine (VM) on the computer system; an operating system (OS) logic block is to execute, within the VM, a first OS running a client application and a second OS running a network protocol stack; and a transaction logic block is to: receive, at the first OS, a transaction command from the client application, wherein the transaction command is associated with a remote memory access; convert, at the first OS, the transaction command to one or more network packets; and provide, from the first OS, a description of the one or more network packets to the second OS via a shared guest physical memory of the VM; and wherein the NIC is to send the one or more network packets to a corresponding destination based on the network protocol stack.