Abstract:
Methods and systems for implementing virtual processors are disclosed. For example, in an embodiment a processing apparatus configured to act as a plurality of virtual processors includes a first virtual program space that includes a first program execution memory, the first program execution memory including code to run a non-real-time operating system capable of supporting a one or more non-real-time applications, a second virtual program space that includes a second program execution memory, the second program execution memory including code to run one or more real-time processes, and a central processing unit (CPU) configured to operate in a first operating mode and a second operating mode, the CPU being configured to perform operating system and application activities using the first virtual program space for the first operating mode without using the second virtual program space and without appreciably interfering with the one or more real-time processes that are running in the second operating mode.
Abstract:
In one embodiment, the present invention includes a device that has a device processor and a device memory. The device can couple to a host with a host processor and host memory. Both of the memories can have page tables to map virtual addresses to physical addresses of the corresponding memory, and the two memories may appear to a user-level application as a single virtual memory space. Other embodiments are described and claimed.
Abstract:
A virtualized storage system comprises at least one host, at least one virtual array, a backend array and a management server. The host requests storage operations to the virtual array, and the virtual array executes storage operations for the host. The backend array, coupled to the virtual array, comprises physical storage for the virtual array. The management server determines the efficiency for the virtual array. The management server determines an input throughput data rate between the host and the virtual array based on storage operations between host and virtual array. The management server also determines an output throughput data rate, from the virtual array to the backend array. The output throughput data rate is based on the storage operations that require access to the backend array. The management server determines the efficiency of the virtual array using the input throughput data rate and the output throughput data rate.
Abstract:
In one embodiment, the present invention includes a memory management unit (MMU) having entries to store virtual address to physical address translations, where each entry includes a location indicator to indicate whether a memory location for the corresponding entry is present in a local or remote memory. In this way, a common virtual memory space can be shared between the two memories, which may be separated by one or more non-coherent links. Other embodiments are described and claimed.
Abstract:
A system configuration is provided with multiple partitions that supports different types of address translation structure formats. The configuration may include partitions that use a single level of translation and those that use a nested level of translation. Further, differing types of translation structures may be used. The different partitions are supported by a single hypervisor.
Abstract:
A method, apparatus, and full-system simulator for speeding memory management unit simulation with direct address mapping on a host system, the host system supporting a full-system simulator, on which a guest system is simulated, the method comprising the following steps: setting a border in the logical space assigned for the full-system simulator by the host system, thereby dividing the logical space into a safe region and a simulator occupying region; shifting the full-system simulator itself from the occupied original host logical space to the simulator occupying region; and reserving the safe region for use with at least part of the guest system.
Abstract:
In one embodiment, the present invention includes a device that has a device processor and a device memory. The device can couple to a host with a host processor and host memory. Both of the memories can have page tables to map virtual addresses to physical addresses of the corresponding memory, and the two memories may appear to a user-level application as a single virtual memory space. Other embodiments are described and claimed.
Abstract:
A virtual input/output memory management unit (IOMMU) is configured to provide a firewall around memory requests associated with an input/output (I/O) device. The virtual IOMMU uses data structures including a guest page table, a host page table and a general control register (i.e., GCR3) table. The guest page table is implemented in hardware to support the speed requirements of the virtual IOMMU. The GCR3 table is indexed using a virtual DeviceID parameter stored in a device table.
Abstract:
Machine-readable media, methods, apparatus and system are described. In some embodiments, a virtual machine monitor of a computer platform may comprise a service virtual machine created by the virtual machine monitor partitioning an underlying hardware machine to support execution of a plurality of overlying guest operating systems, wherein the plurality of guest operating systems comprise a guest operating system complying with a non-native guest system architecture different from a host system architecture with which the hardware machine complies. The service virtual machine may further comprise a translation layer to translate instructions from the guest operating system complying with the non-native guest system architecture into instructions complying with the host system architecture.
Abstract:
A multi-dimension engine, connected to a system TLB, generates sequences of addresses to request page address translation prefetch requests in advance of predictable accesses to elements within data arrays. Prefetch requests are filtered to avoid redundant requests of translations to the same page. Prefetch requests run ahead of data accesses but are tethered to within a reasonable range. The number of pending prefetches are limited. A system TLB stores a number of translations, the number being relative to the dimensions of the range of elements accessed from within the data array.