| Patent application number | Description | Published |
|---|
| 20080294932 | INCREASING SOFTWARE FAULT TOLERANCE BY EMPLOYING SURPRISE-REMOVAL PATHS - The subject invention relates to systems and methods for automatic recovery from errors in a computing environment. A system is provided to facilitate failure recovery in the computing system. The system includes at least one driver component that enumerates at least one layer of a driver stack. A module associated with the driver component requests re-enumeration of the driver stack upon detection of an error in the computing system. When an error is detected by a driver or operating system component, a protocol can be established whereby a new copy of the driver's stack or system resources is re-enumerated in parallel to existing resources that may be in an unknown or error state. The new copy of the stack may allow the driver to become operational in lieu of the previous stack which can be reclaimed for other system uses over time. | 11-27-2008 |
| 20090031288 | EJECTION FAILURE MECHANISM - A system and method for an ejection failure mechanism is provided. The system receives a request to eject an ejectable resource, and, provides information associated with a failure of the ejection of the ejectable resource, if ejection of the ejectable resource is unsuccessful. The system thus provides a deterministic mechanism through which information associated with failure of the ejection of an ejectable resource can be communicated. As such, an initiator of the request to eject can receive information associated with a cause of the ejection failure. | 01-29-2009 |
| 20100083276 | ON-THE-FLY REPLACEMENT OF PHYSICAL HARDWARE WITH EMULATION - Various aspects are disclosed herein for replacing the hardware backing the memory locations associated with a virtual machine with a backing mechanism. The backing mechanism may have the memory locations appear to contain data convenient to the driver in the virtual machine, typically containing what the hardware would have returned if the hardware had been read from. The data image being returned from the memory locations may travel with the virtual machine even if the virtual machine moves to a different physical machine that does not contain hardware equivalent to the hardware that was recently removed from the virtual machine. | 04-01-2010 |
| 20100088431 | CONFIGURATION SPACE VIRTUALIZATION - Various aspects are disclosed herein for bounding the behavior of a non-privileged virtual machine that interacts with a device by creating a description of the device which indicates to a privileged authority (1) which operations on the device may have system-wide effects and (2) which operations have effects local to the device. The privileged authority may then permit or deny these actions. The privileged authority may also translate these actions into other actions with benign consequences. | 04-08-2010 |
| 20100095310 | VIRTUALIZED STORAGE ASSIGNMENT METHOD - Various aspects are disclosed for building a device driver stack in a virtual machine partition that does not physically control the device represented by the stack. In an embodiment, a secondary interface and driver for an I/O device may be instantiated. Information from an I/O virtualization layer describing the devices that the associated driver may control may be requested. A multi-path redirection layer may provide a handle to an existing stack that includes a driver for the I/O device. This existing stack may then be used to communicate with the device and allow the creation of a new stack including an object representing the device and a new driver for the device. The multi-path redirection layer may then open a handle to the new stack and inform the device virtualization layer, which may then ask the existing device interface to relinquish control of the device to the newly created interface. | 04-15-2010 |
| 20100250868 | VIRTUAL NON-UNIFORM MEMORY ARCHITECTURE FOR VIRTUAL MACHINES - Techniques for effectuating a virtual NUMA architecture for virtual machines and adjusting memory in virtual NUMA nodes are described herein. | 09-30-2010 |
| 20100251234 | VIRTUAL NON-UNIFORM MEMORY ARCHITECTURE FOR VIRTUAL MACHINES - Techniques for effectuating a virtual NUMA architecture for virtual machines are disclosed herein. | 09-30-2010 |
| 20100325282 | MIGRATING A VIRTUAL MACHINE THAT OWNS A RESOURCE SUCH AS A HARDWARE DEVICE - A computing device has first and second virtual machines (VMs) and a resource assigned to the first VM. Each access request for the resource is forwarded thereto until the first VM is to be saved or migrated. Thereafter, each access request is forwarded to a holding queue. When the resource has acted upon all access requests forwarded thereto, the resource is reassigned to the second VM, and each access request at the holding queue is forwarded to the second VM and then the resource. Thus, all access requests for the resource are acted upon by the resource even after the resource is removed from the first VM and assigned to the second VM, and the save or migrate of the first VM can thereafter be completed. | 12-23-2010 |
| 20110066782 | PARTITION BUS - 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. | 03-17-2011 |
| 20110119671 | On-The-Fly Replacement of Physical Hardware With Emulation - Various aspects are disclosed herein for replacing the hardware backing the memory locations associated with a virtual machine with a backing mechanism. The backing mechanism may have the memory locations appear to contain data convenient to the driver in the virtual machine, typically containing what the hardware would have returned if the hardware had been read from. The data image being returned from the memory locations may travel with the virtual machine even if the virtual machine moves to a different physical machine that does not contain hardware equivalent to the hardware that was recently removed from the virtual machine. | 05-19-2011 |
| 20110153715 | LIGHTWEIGHT SERVICE MIGRATION - Techniques for migrating lightweight services in a datacenter are described. In an example embodiment the services can be attached to virtual ports of embedded switches and assigned unique network identifiers. The services can be migrated from one physical host to another by migrating the unique identifiers and associating them with instantiated instances of at least equivalent services. | 06-23-2011 |
| 20110154318 | VIRTUAL STORAGE TARGET OFFLOAD TECHNIQUES - A virtual machine storage service can be use a unique network identifier and a SR-IOV compliant device can be used to transport I/O between a virtual machine and the virtual machine storage service. The virtual machine storage service can be offloaded to a child partition or migrated to another physical machine along with the unique network identifier. | 06-23-2011 |
