Intel Corporation

Gregory Cummings

Sujoy Sen

Kenneth C Creta

William T Futral

Sivakumar Radhakrishnan

Eliel Louzoun

Mickey Gutman

Rameshkumar G Illikkal

Nrupal R Jani

David C Lee

Siva Balasubramanian

Shannon L Nelson

Hemal Vinodchandra Shah

Luke L Chang

Gary Tsao

Ajay G Gupta

Reed J Sloss

Hrishikesh Narasimhan

Techniques are described that can be used to enable a transfer of an operating system from one machine to another. The transfer permits the operating system to be available to the target machine at buffers that are accessible to one or more application or other logic. In some implementations, information related to an operating system migration is stored in a buffer that is accessible to an application that is to use the information and thereby avoids a copy of such information from an intermediate buffer to an application buffer.

Techniques to migrate a virtual machine

In an input/output virtualization-enabled computing environment, a device, method, and system for securely handling virtual function driver communications with a physical function driver of a computing device includes maintaining communication profiles for virtual function drivers and applying the communication profiles to communications from the virtual function drivers to the physical function driver, to determine whether the communications present a security and/or performance condition. The device, method and system may disable a virtual function driver if a security and/or performance condition is detected.

Method, system, and device for securely handling virtual function driver communications with a physical function driver

Techniques to copy an operating system

In an embodiment, an apparatus is provided that may include circuitry to be comprised in a platform. The circuitry may be to determine, at least in part, at least one virtual machine (VM) resident in the platform to be assigned to process, at least in part, at least one packet. The circuitry may determine, at least in part, the at least one VM based at least in part upon (1) comparison, at least in part, of at least one destination of the at least one packet to at least one predetermined destination, and (2) at least one value based at least in part upon both at least one port associated with the at least one packet and at least one source of the at least one packet. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.

Assignment, at least in part, of at least one virtual machine to at least one packet

Methods and apparatuses for flushing write-combined data from a buffer within a memory to an input/output (I/O) device.

Methods and apparatuses for flushing write-combined data from a buffer

A system, method and apparatus for prioritizing transactions is disclosed. I/O devices may generate transactions with a stream identifier. A transaction classifier may assign a priority to a transaction based upon a stream identifier of the transaction. An arbiter may select a transaction for processing based upon priorities assigned to the transaction.

Stream priority

A method, apparatus, system, and computer readable medium are disclosed. In one embodiment the method includes detecting a virtual machine (VM) attempting to communicate with a device coupled to a computer system using a first software plug-in interface that is incompatible with the device. The method continues by temporarily removing the VM from controlling system. Then the first software plug-in interface in the VM is replaced with a second software plug-in interface, which is compatible with the device, without the knowledge of the VM. Then control is returned to the VM and the VM is allowed to resume the communication attempt with the device using the second software plug-in interface.

Method, device, and system for seamless migration of a virtual machine between platforms with different I/O hardware

In some embodiments, a shared IO device includes a plurality of packet filters associated with a plurality of virtual systems sharing the shared I/O device and a plurality of filter receive queues assigned to the plurality of packet filters. A processor is responsive to a receive packet to determine if the receive packet matches one of the plurality of packet filters and the processor, upon determining that there is a matched packet filter, is adapted to place the receive packet in the filter receive queue assigned to the matched packet filter.

Shared input-output device

According to some embodiments, protocol control information is speculatively pre-fetched from an external memory unit. For example, a processing engine may speculate, based on a receive packet, a connection that will subsequently have a send packet to be processed in accordance with a protocol. The processing engine may also dynamically calculate a time when protocol control information, associated with the speculated connection, is to be pre-fetched from an external memory unit (e.g., the time may be calculated in accordance with an estimated processing time associated with the receive packet and an estimated latency time associated with pre-fetching the protocol control information from the external memory unit). The protocol control information associated with the connection may then be pre-fetched from the external memory unit in accordance with the dynamically calculated time.

Speculative prefetch of protocol control information from an external memory unit

Apparatus and method for a first device to query a second device for the availability of a hardware feature within the second device, and for the second to receive and analyze the query to determine whether or not to respond, depending on the version of hardware feature sought, a code identifying a vendor, etc., and responding with a reply providing an indication of availability of the hardware feature and/or an address at which the hardware feature may be accessed, if the determination is made to reply.

Chipset feature detection and configuration by an I/O device

Write-combining in a computer system that uses a push model is set forth herein. In one embodiment, the method comprises creating one or more packets having a descriptor and the data associated with detected write transactions stored in the buffer assigned to a write-combinable range in response to a flush request to flush the buffer, and sending (pushing) these packets to the network I/O device.

Growing community of inventors

Portland, OR, United States of America

Gregory Cummings