508 results about "Memory mapping" patented technology

The method of the present inventive concept is configured to utilize Operating System data structures related to memory-mapped binaries to reconstruct processes. These structures provide a system configured to facilitate the acquisition of data that traditional memory analysis tools fail to identify, including by providing a system configured to traverse a virtual address descriptor, determine a pointer to a control area, traverse a PPTE array, copy binary data identified in the PPTE array, generate markers to determine whether the binary data is compromised, and utilize the binary data to reconstruct a process.

A memory mapping unit requests allocation of a remote memory to memory mapping units of other processor nodes via a second communication unit, and requests creation of a mapping connection to a memory-mapping managing unit of a first processor node via the second communication unit. The memory-mapping managing unit creates the mapping connection between a processor node and other processor nodes according to a connection creation request from the memory mapping unit, and then transmits a memory mapping instruction for instructing execution of a memory mapping to the memory mapping unit via a first communication unit of the first processor node.

There is provided an apparatus for controlling a flash memory, which includes a memory for storing a plurality of flash translation layers; and a control block for, when an access is requested from outside, determining a pattern of the access, selecting one of the flash translation layers stored in the memory based on the determination result, and managing mapping data of the flash memory based on the selected flash translation layer.

The invention discloses a dynamic memory mapping method of a virtual machine manager, the steps are that: separately establish a virtual machine page pool and a virtual machine manager page pool; when the virtual machine access is violated, the virtual machine manager dynamically establishes and updates the mapping relations f(p) form a physical memory collection P to a machine memory collection M in the virtual machine manager page pool; the inventive method can simultaneously support obtaining pages according to the requirements at upper layer, virtual storage, as well as memory shared functions, so as to make the virtual machine manager realize dynamic management and allocation of the virtual machine memory on the premise that the virtual machine manager sufficiently guarantees the virtual machine access memory performance.

The present invention is directed to a new visualization platform for the interactive exploration of large datasets. The present invention integrates a collection of relevant visualization techniques to provide a new visual metaphor for viewing large datasets. It is capable of providing comprehensive support for data exploration, integrating large-scale data visualization with querying, browsing, and statistical evaluation. A variety of techniques are utilized to minimize processing delays and the use of system resources, including processing pipelines, direct IO, memory mapping, and dynamic linking of “on-the-fly” generated code.

A system and method for memory mapping are provided, the system including a logical unit to physical unit map table, data unit groups in signal communication with the map table, and log unit groups, each associated with a corresponding one of the data unit groups, where updated data for any data unit within one of the data unit groups is stored in any log unit within the corresponding one of the log unit groups, and the method including receiving write data for a logical unit number from a host determining which of a plurality of data block groups comprises the logical unit number, and storing the write data in any unfilled log unit of a log block group corresponding to the determined data block group.

A method includes initiating a transition from an operating mode to a sleep mode at an electronic device that includes a volatile memory and a non-volatile memory. In response to the initiating, data is copied from the volatile memory to the non-volatile memory and a portion of the volatile memory is disabled. Another method includes determining that a low performance mode condition is satisfied at an electronic device that includes a volatile memory that stores a first copy of read-only data and a non-volatile memory that stores a second copy of the read-only data. A memory mapping of the read-only data is updated from the volatile memory to the non-volatile memory. A portion of the volatile memory that stores the first copy is disabled and access of the read-only data is directed to the non-volatile memory instead of the volatile memory.

To assure the multiprocessing performance of CPU on a microprocessor, the invention provides a method of memory mapping for multiple concurrent processes, thus minimizing cache thrashing. An OS maintains a management (mapping) table for controlling the cache occupancy status. When a process is activated, the OS receives from the process the positional information for a specific part (principal part) to be executed most frequently in the process and coordinates addressing of a storage area where the process is loaded by referring to the management table, ensuring that the cache address assigned for the principal part of the process differs from that for any other existing process. Taking cache memory capacity, configuration scheme, and process execution priority into account when executing the above coordination, a computer system is designed such that a highest priority process can have a first priority in using the cache.

A method and system are provided for integrating partitions in a virtual machine environment. Specifically, a partition bus is provided, where the partition bus operatively connects partitions in such a way that it functions as a data transport mechanism allowing for data transfer and device sharing between partitions. The partition bus relies on virtualizing software in order to establish itself and to establish channels of communication between partitions and to inject interrupts to partitions where it is appropriate to do so. Furthermore, the partition bus employs such mechanisms ring buffers, transfer pages, and memory map changes to transfer information (requests and data). Furthermore, it uses policy agents to decide when information should be transferred or when devices should be shared among partitions. Lastly, it employs various mechanisms to ensure smooth integration between partitions, which includes remote services that have proxy devices and device versioning functionalities.

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.

A method of dynamically reallocating memory affinity in a virtual machine after migrating the virtual machine from a source computer system to a destination computer system migrates processor states and resources used by the virtual machine from the source computer system to the destination computer system. The method maps memory of the virtual machine to processor nodes of the destination computer system. The method deletes memory mappings in processor hardware, such as translation lookaside buffers and effective-to-real address tables, for the virtual machine on the destination computer system. The method starts the virtual machine on the destination computer system in virtual real memory mode. A hypervisor running on the destination computer system receives a page fault and virtual address of a page for said virtual machine from a processor of the destination computer system and determines if the page is in local memory of the processor. If the hypervisor determines the page to be in the local memory of the processor, the hypervisor returning a physical address mapping for the page to the processor. If the hypervisor determines the page not to be in the local memory of the processor, the hypervisor moves the page to local memory of the processor and returns a physical address mapping for said page to the processor.

A method (and system) for emulating a target system's memory addressing using a virtual-to-real memory mapping mechanism of a host multiprocessor system's operating system, includes inputting a target virtual memory address into a simulated page table to obtain a host virtual memory address. The target system is oblivious to the software it is running on.

An apparatus for processing data, the apparatus comprising: a processor operable in a plurality of modes and either a secure domain or a non-secure domain including at least one secure mode being a mode in the secure domain; and at least one non-secure mode being a mode in the non-secure domain. When the processor is executing a program in a secure mode, the program has access to secure data which is not accessible when the processor is operating in a non-secure mode. The processor further includes a non-secure translation table base address register and a secure translation table base address register operable in the non-secure and secure domain, respectively, to indicate a region of memory storing either non-secure or secure domain memory mapping data defining how virtual addresses are translated to physical addresses within either the non-secure or secure domain.

Methods, systems, and apparatus for processing packet fragments for reassembly into packets. Datastreams containing packet fragments are received and data corresponding to different channels are segregated. For each channel, data is then aggregated to recreate packet fragments. Once the fragments are recreated, they are, if required, resequenced using a two-tier memory mapping structure where only pointers, and not the fragments, are manipulated. After resequencing fragments to reassemble the packet, the reassembled packet is dispatched to its ultimate destination. The present invention also provides a method of load balancing between multiple links when packet fragments are transmitted from a fragmenting node through a multiple link bundle.

The invention provides a virtual machine memory mapping method and a system, wherein the method comprises step 1 of selecting a memory mapping method according to an application layer mapping request, and executing step 2 or step 3; step 2 of binding machine pages to be mapped of a virtual machine to be mapped and physical pages of a monitoring virtual machine, directly reading and writing corresponding memory corresponding to the mapped virtual machine, and executing step 4; step 3 of enabling the monitoring virtual machine to decompose a virtual address space into corresponding physical pages combined by a plurality of pages after the monitoring virtual machine processes unused physical memory in the physical memory, obtaining the machine pages to be mapped of the virtual machine to be mapped, carrying out corresponding processing after judgment, then binding the physical pages of the monitoring virtual machine and the machine pages to be mapped of the virtual machine to be mapped, and executing step 4; step 4 of releasing the memory of the monitoring virtual machine corresponding to the mapping memory of the virtual machine to be mapped after mapping, setting a mapping list from the machine pages of the monitoring virtual machine to the physical pages, and setting a corresponding item to be an invalid machine page.

The invention discloses a method for realizing parallel compression and parallel decompression on an FASTQ file containing DNA (deoxyribonucleic acid) sequence read data. By aiming at the compression and the decompression of the FASTQ file containing the DNA sequence read data, by utilizing circular double buffering queues, circular double memory mapping and memory mapping and by combining the data segmentation processing technology, the multi-thread streamline parallel compression and parallel decompression technology, the read-write sequence two-dimensional array technology and the like, the parallel compression and the parallel decompression between multiple processes of the FASTQ file and between in-process multiple threads is realized. The parallel compression and parallel decompression can be realized based on MPI and OpenMP, and also can be realized based on the MPI and Pthread (POSIX thread). According to the method disclosed by the invention, by fully utilizing all computational nodes and the powerful computational capability of an intra-node multi-core CPU (central processing unit), constraints of resources, such as a processor, a memory and the like, on a serial compression and decompression program, can be released.

The invention discloses a method and a system for dynamically distributing an embedded virtual memory. By the method for dynamically distributing the memory, memory resource waste due to the conventional embedded virtual fixed memory distribution can be avoided effectively. The system comprises a memory management module, an embedded virtual machine memory monitoring module and an embedded virtual machine module, wherein the virtual machine memory monitoring module is used for monitoring a real-time memory requirement condition of an embedded system in real time; the memory management module is used for initializing memory distribution, establishing an initialized memory mapping table and updating the memory distribution and the memory mapping table in real time according to a monitoring situation of the virtual machine memory monitoring module; and the embedded virtual machine module is used for generating an embedded hardware virtual environment and running an embedded operating system, and performing various embedded applications on the embedded operating system.

The present disclosure relates to techniques for system and methods for software-based management of protected data-blocks insertion into the memory cache mechanism of a computerized device. In particular the disclosure relates to preventing protected data blocks from being altered and evicted from the CPU cache coupled with buffered software execution. The technique is based upon identifying at least one conflicting data-block having a memory mapping indication to a designated memory cache-line and preventing the conflicting data-block from being cached. Functional characteristics of the software product of a vendor, such as gaming or video, may be partially encrypted to allow for protected and functional operability and avoid hacking and malicious usage of non-licensed user.

A storage apparatus using a nonvolatile memory as a cache and a mapping information recovering method for the storage apparatus are provided. The storage apparatus includes a mapping information storage module which stores in the nonvolatile memory mapping information of the nonvolatile memory and a first physical block address allocated when the mapping information is stored; a scan module which scans the first physical block address through a second physical block address allocated currently; and a mapping information recovery module which recovers the mapping information between the first physical block address and the second physical block address based on a result of the scan by the scan module.

The disclosed drive method for embedded device in protective-mode OS comprises: packing application program of different OS into uniform OS abstract interface function; registering the embedded device as OS-supported virtual device to build the mapping between virtual device kernel-state memory space and drive mode user-state memory space; calling the drive module and OS interface function by application program to interact with the embedded device for information control and/or data by memory mapping. This invention improves system running efficiency.

The invention provides a base station user plane data processing and optimizing method based on a Linux system. The method comprises the steps as follows: package classification is completed by using a package processing acceleration module; the interrupt of package reception is reduced in an intelligent switching manner for interrupt polls; memory copying is avoided by using a core space-user space memory mapping technology; and context switching between a core state and a user state is reduced by using a lock-free queue technology, so that the performance for processing base station user plane data is remarkably improved.

A method for managing virtual memory including placing a first virtual memory page in a physical memory page to create a virtual-to-physical memory mapping, associating a first page mapping cookie value with the virtual-to-physical memory mapping, determining whether the virtual-to-physical memory mapping is valid using the first page mapping cookie value, and performing a memory operation addressing the first virtual memory page if the virtual-to-physical memory mapping is valid.

An apparatus and method for implementing a heterogeneous memory subsystem is described. For example, one embodiment of a processor comprises: memory mapping logic to subdivide a system memory space into a plurality of memory chunks and to map the memory chunks across a first memory and a second memory, the first memory having a first set of memory access characteristics and the second memory having a second set of memory access characteristics different from the first set of memory access characteristics; and dynamic remapping logic to swap memory chunks between the first and second memories based, at least in part, on a detected frequency with which the memory chunks are accessed.

The invention discloses a large image real-time browsing method based on a multi-core structure, comprising the following steps: (1) reading image data of appointed positions of a large image into a cache pool by a memory mapping technique; (2) displaying corresponding data blocks inside the cache pool in an image mode according to the appointment of a browser, wherein a displayed image area is acurrent browsing area, and reading and updating image data inside the cache pool when the browser selects an image area adjacent to the current browsing area to browse; and processing a plurality of threads by setting parallel working pipelines and utilizing a CPU multi-core technique when the image data of the current browsing area are displayed and the image data of the cache pool are read in the step (1) and the step (2). The large image real-time browsing method greatly enhances the browsing efficiency without any preprocessing operation by using the parallel working pipelines and being based on a predicted data processing technique.

A memory mapping apparatus and a method in a video decoder/encoder utilize a dividing unit, a storage unit and a memory allocation unit. The dividing unit divides picture data into macroblocks and divides each of the macroblocks, which are units of encoding, into partitions having a predetermined size. A storage unit comprises at least one memory bank which is independently accessible. A memory allocation unit allocates adjacent partitions to different memory banks. Accordingly, a total number of cycles necessary to read and write the picture data is reduced.

The invention provides an efficient metadata memory access method in a distributed file system, which comprises the following steps: based on a file tree access mode combining a multi-path search tree and a trie tree, reading and writing is carried out on a metadata file in a file memory mapping way; and based on a metadata tree structure, inode metadata synchronized to a disc from a memory is optimized to reduce the disc load.