Abstract: An input-output memory management unit (IOMMU) and method for tracking memory pages during virtual-machine migration are generally described herein. The IOMMU includes an IOMMU manager to service address translation requests associated with memory pages received from a plurality of I/O devices, and a translation request filter to identify translations previously requested from a translation manager. The IOMMU also includes a device context table to identify whether virtual-machine migration is enabled for memory pages associated with virtual addresses identified in received address translation requests. Based on information in the device context table, the IOMMU manager may send a virtual page identifier to the translation manager identifying a virtual page when virtual-machine migration is enabled to indicate that the virtual page has been accessed. The IOMMU manager refrains from sending the virtual page identifier to the translation manager when the virtual page is listed in the translation request filter.

Abstract: An input-output memory management unit (IOMMU) and method for tracking memory pages during virtual-machine migration are generally described herein. The IOMMU includes an IOMMU manager to service address translation requests associated with memory pages received from a plurality of I/O devices, and a translation request filter to identify translations previously requested from a translation manager. The IOMMU also includes a device context table to identify whether virtual-machine migration is enabled for memory pages associated with virtual addresses identified in received address translation requests. Based on information in the device context table, the IOMMU manager may send a virtual page identifier to the translation manager identifying a virtual page when virtual-machine migration is enabled to indicate that the virtual page has been accessed. The IOMMU manager refrains from sending the virtual page identifier to the translation manager when the virtual page is listed in the translation request filter.

Abstract: Example embodiments of an IOMMU with translation request management and methods for managing translation requests are generally described herein. Other example embodiments may be described and claimed. In some example embodiments, the IOMMU comprises one or more reorder buffers. Each reorder buffer may be associated with one I/O device and may be used to queue pending translation requests for the associated I/O device. A translation request received from a requesting I/O device may be stored in a reorder buffer associated with the requesting I/O device when the translation request is unable to be serviced or when there are one or more pending translation requests in the reorder buffer.

Abstract: A method and system to map virtual I/O devices and resources to a standard I/O bus is provided. The system, in one example embodiment, comprises a virtual device detector, a resource allocator, and an activation module. The virtual device detector may be configured to detect an indication of a virtual Peripheral Component Interconnect Express (PCIe) device having an associated template. The resource allocator may allocate, based on the template, a plurality of resources required for the virtual PCIe device from a pool of available resources. The activation module may generate a set of entries in a resource mapping table, the set of entries corresponding to the allocated resources and defining the virtual PCIe device.

Abstract: Example embodiments of an IOMMU with translation request management and methods for managing translation requests are generally described herein. Other example embodiments may be described and claimed. In some example embodiments, the IOMMU comprises one or more reorder buffers. Each reorder buffer may be associated with one I/O device and may be used to queue pending translation requests for the associated I/O device. A translation request received from a requesting I/O device may be stored in a reorder buffer associated with the requesting I/O device when the translation request is unable to be serviced or when there are one or more pending translation requests in the reorder buffer.

Abstract: A method and system to map virtual I/O devices and resources to a standard I/O bus is provided. The system, in one example embodiment, comprises a virtual device detector, a resource allocator, and an activation module. The virtual device detector may be configured to detect an indication of a virtual Peripheral Component Interconnect Express (PCIe) device having an associated template. The resource allocator may allocate, based on the template, a plurality of resources required for the virtual PCIe device from a pool of available resources. The activation module may generate a set of entries in a resource mapping table, the set of entries corresponding to the allocated resources and defining the virtual PCIe device.

Abstract: A method and system to access a service utilizing a virtual communications device is provided. The system, in one example embodiment, comprises a network layer to receive a message targeting a network address, the network address being associated with a service running on a host server; a network address detector to determine, from the message, the network address; a topology module to determine a virtual device associated with the target network address; a host address range detector to determine, based on the determined virtual device, a host address range associated with the determined virtual device; and a host communications module to communicate the message to the host server to be processed in the determined host address range.

Abstract: A method and system to create a virtual topology is provided. The system, in one example embodiment, comprises a network layer to receive a request to create a virtual Peripheral Component Interconnect (PCI) Express device, a device type detector to determine, from the request, a type of the virtual PCI Express device, a virtual device generator to generate a configuration header, the configuration header being in a format of a PCI Express device configuration header, and a topology storage to store the configuration header.