73 results about "Memory virtualization" patented technology

A computer system employing memory virtualization may employ a function-based technique for virtual-to-physical address translation. A function-based translation technique may involve replacing a generic trap handler and one or more translation table look-ups with a function to compute a corresponding physical address from a given virtual address. The computer system may be configured to determine a translation function dependent on mappings in one or more translation tables. The computer system may be configured to reorganize a memory, to reorganize one or more translation tables, or to allocate different blocks of memory to an application prior to determining a translation function. Different applications or threads executing on the computer system may employ different translation functions. Different regions of memory may be accessed using different translation functions. Some virtual addresses may be translated using a function while others may be translated using one or more translation table look-ups.

The invention provides a virtual machine system based on the management technology of equipment access storage and an equipment access control method thereof. The virtual machine system comprises a virtual machine monitor, an underlying hardware supporting the management technology of storage for equipment input and output, an equipment control module and a plurality of virtual machines; wherein the virtual machine monitor comprises a scheduling module which can schedule different virtual machines to run on a processor, a memory virtualization module used for completing memory management of the virtual system, an interrupt virtualization module, an instruction analyzer, a privilege calling interface used for providing services for privilege entity and a control module of a storage management unit of equipment input and output. In the virtual machine system, one equipment control module corresponds to physical equipment and is responsible for initiating privilege calling to the virtual machine monitor, receiving and executing an equipment port access instruction transmitted by the virtual machine monitor, detecting equipment state and hiding the virtualization equipment resources and the like. In the equipment access method provided by the invention, a client operating system in the virtual machine can access equipment data by a memory mapping mode; and the equipment utilizes the equipment access storage management technology to carry out direct storage access to virtual machine data. The virtual machine system and the equipment access control method lead the equipment performance to be improved greatly, relieve the system performance bottle-neck, and improve safety of equipment access control. The equipment access control method does not need to modify the client operating system, is easy to be realized and has wide application range.

The invention relates to a platform virtualization system comprising a CPU simulator, a memory virtualization module, and an external virtualization module. The CPU simulator reads an X86 architecture code instruction and judges whether an instruction basic block is translated or not; a binary translator is used for translation and comprises a translation engine and an execution engine; the translation engine translates an X86 architecture code into a Loongson platform code; the execution engine prepares the operational context of the Loongson platform code, locates the Loongson platform code corresponding to the X86 architecture code from a Loongson platform code cache and executes the code. The memory virtualization module uses a shadow page-table method. The external virtualization module establishes a corresponding device model for each external device. An X86 architecture virtual machine interacts with the external devices through the device models, thereby discovering and accessing the devices. The platform virtualization system allows information systems not matching with the domestic Loongson hardware platform yet to run in the domestic software-hardware environments in a virtualized manner, and contributions are made for the smooth transition between new and old technical systems in the automatic upgrading process of the information systems.

The invention provides an embedded network virtualization environment VirtIO virtualization working method. The embedded network virtualization environment VirtIO virtualization working method comprises, for a VirtIO front drive program, introducing a delay mechanism to a VirtIO network so that a client does not immediately transfer the control right to a host when performing network data I / O (input / output) but caching the data into a queue, and after a certain time, performs context switching to inform the host to obtain the data from the cache queue. The embedded network virtualization environment VirtIO virtualization working method can obviously reduce the number of times of context switching between the client and the host, save a large number of CPU (central processing unit) resources to process more network I / O. Experiments show that, within a set time delay, network throughput can be increased by more than three times.

The invention provides a method and a device for realizing dual-live disaster recovery for a server virtualization system. The method includes: configuring a server virtualization system ICS, and creating a CFS storage domain and a shared storage pool; Modifying the storage domain profile to set the heartbeat timeout to be greater than the dual live storage recovery time. The device comprises a license adding module, which is used for adding an ICS license of a server virtualization system; A host adding module, configured to add a server virtualization system host; A storage domain creation module for creating a server virtualized system storage domain; A storage pool creation module for creating a server virtualization system storage pool; A virtual machine creation module for creating avirtual machine; The storage domain background configuration module used for modifying the storage domain background configuration file and setting the heartbeat timeout time to be greater than the dual-live storage recovery time. The invention enhances the safety of data access, more adapts to the needs of enterprise-level customers, and promotes the perfection of the functions of the company'svirtualized products.