International Business Machines Corporation

Gary Dean Anderson

Charles Scott Graham

Alongkorn Kitamorn

Raymond J Harrington

Thoi Nguyen

Gerald J Fahr

Wayne Allan Britson

Hoa Cong Nguyen

Brent William Jacobs

Ajay Kumar Mahajan

Carol B Hernandez

Sheldon Ray Bailey

Michael Alan Kobler

Guy L Guthrie

Naresh Nayar

Timothy J Schimke

James Anthony Pafumi

Bradly George Frey

Kyle Alan Lucke

Morgan Jeffrey Rosas

Andrew Henry Wottreng

Curtis Shannon Eide

John Ronald Oberly, Iii

Bryan Mark Logan

Paul Edward Movall

Andrew T Koch

Jonathan Louis Kaus

Steven Edward Royer

Adam Charles Lange-Pearson

Michael Youhour Lim

Ping Chen

Ward Ray Nelson

Priya Paul

Ronald Xavier Arroyo

Veena Patwari

Diane Lacey Knipfer

Jayeshkumar M Patel

Salim Ahmed Agha

Shamsundar Ashok

Gerald Kreissig

Andreas Arnez

David Alan Bailey

Thomas Joseph Warne

Stephanie Maria Forsman

Frank Scholz

Joshua W Boyer

Lawrence G Mosher

Gerald J Hladik

Raymond L Ricci

Christopher McNelis

Richard Jamie Knight

Joseph Donald Armstrong

Henry Yeh

Patricia Y Wang

Hemlata N Reddy

William Thomas Truskowski

Peter Rudolf Keller

A vendor-independent resource configuration interface automatically maps virtual functions to physical functions in a self-virtualizing IO resource using the concept of a logical port that maps to a particular physical port and protocol in the self-virtualizing IO resource. A user wishing to provide a logical partition access to a self-virtualizing IO resource typically creates or configures a logical port for the logical partition by mapping the logical port to a particular physical port and protocol defined for the self-virtualizing IO resource, and an appropriate virtual function mapped to an appropriate physical function on an appropriate self-virtualizing IO resource is automatically selected, typically without requiring the user to have a detailed understanding of the numbers of supported virtual functions, physical functions and protocols supported by specific resources.

Vendor-independent resource configuration interface for self-virtualizing input/output device

A method, system and computer program product are provided for implementing capacity and user-based resource allocation for a hardware I/O adapter, such as, a Single Root Input/Output Virtualization (SRIOV) adapter in a virtualized system. Configuring a virtual function (VF) is provided by supplying a capacity value of a port. The capacity value represents a percentage of the available performance of the port. The adapter driver configures multiple adapter parameters to provide the available performance for the port. A user is enabled to specify a level of performance assigned to each protocol of the port.

Implementing capacity and user-based resource allocation for a shared adapter in a virtualized system

A virtual function mapping process, which is capable of being used in connection with the migration of a logical partition to a target system, creates candidate lists for virtual functions assigned to the logical partition, which are populated with candidate physical ports from a target system that are capable of being mapped to such virtual functions. Candidate physical ports are assigned weights based upon their suitability to be mapped to a particular virtual function, and as candidate physical ports are selected for virtual functions, weights for other candidate physical ports for other virtual functions are recalculated to reflect the impact of the selection of candidate physical ports on the suitability of the remaining physical ports for other virtual functions.

Best fit mapping of self-virtualizing input/output device virtual functions for mobile logical partitions

A method for replacing a current security certificate includes producing a security certificate request at a first device that includes a request for a replacement security certificate. The method additionally includes sending the security certificate request to a security certificate vendor and receiving a replacement security certificate from the security certificate vendor. The method further includes installing the replacement security certificate within a verification layer of the client device and transmitting the replacement security certificate to the server. The method additionally includes verifying that the server has installed the replacement security certificate, wherein the verification further verifies that the replacement security certificate enables encrypted communication between the client device and the server. The method additionally includes archiving the current security certificate upon completion of the verification, and activating the replacement security certificate for use in encrypting communications between the client device and the server.

Techniques for handling SSL certificate expiration and renewal

A hypervisor-based facility is provided for communicating between a hardware management console (HMC) and a logical partition of a data processing system. The facility includes: packaging a request or response of a source endpoint as cargo in a generic transport primitive, the source endpoint being either an HMC or a logical partition of the data processing system; and forwarding the generic transport primitive from the source endpoint to a target endpoint via the hypervisor. The forwarding includes receiving the transport primitive at the hypervisor and forwarding the cargo of the transport primitive to the target endpoint. The cargo includes the request or response from the source endpoint, and the hypervisor forwards the cargo absent inspection or parsing of that cargo. The target endpoint is the other one of the logical partition or the hardware management console of the data processing system.

Hypervisor-based facility for communicating between a hardware management console and a logical partition

An on-demand allocation of virtual asynchronous services interface adapters is provided. A determination is made as to whether an operation request requires that a set of virtual I/O service partitions have a required number of virtual asynchronous services interface adapters. If a required number of virtual asynchronous services interface adapters is required, a determination is made as to whether the set of virtual I/O service partitions have the required number of virtual asynchronous services interface adapters. Responsive to a failure to have the required number of virtual asynchronous services interface adapters, a set of new virtual asynchronous services interface adapters is defined in partition management firmware and in the set of virtual I/O service partitions. The set of new virtual asynchronous services interface adapters is configured in the set of virtual I/O service partitions and the operation is issued to the set of virtual I/O service partitions.

On-demand allocation of virtual asynchronous services interfaces

A method and system for managing peripheral connection wakeup signaling in a processing system supporting multiple virtual machines provides a mechanism by which ownership of a peripheral having system wakeup capability is transferred between virtual machines. The power management event signal is connected to a service processor input that in turn signals a hypervisor to direct the wakeup activity to a particular logical partition in which the virtual machine was last executing. The hypervisor can then determine whether or not to wake up the entire system, or portions thereof and can direct the power management event to the appropriate virtual machine. In particular the peripheral may be an Ethernet adapter supporting Wake-On-LAN capability. State initialization, which is typically ensured by system power cycling is provided instead by controlling power to the standby power source or in some instances by forcing an indication of a disconnect/reconnect of the wakeup signaling connection.

Method and system for managing peripheral connection wakeup in a processing system supporting multiple virtual machines

A method for controlling input and output of a virtualized computing platform is disclosed. The method can include creating a device interface definition, assigning an identifier to a paging device and configuring commands useable by a virtual input output server. The commands can be sent to the input output server and can be converted by the input output server into paging device commands. A hypervisor can assist in facilitating the communication configuration. Other embodiments are also disclosed.

Arrangements for I/O control in a virtualized system

A system and method for fast system recovery that bypasses diagnostic routines by disconnecting failed hardware from the system before rebooting. Failed hardware and hardware that will be affected by removal of the failed hardware of the system are disconnected from the system. The system is restarted, and because the failed hardware is disconnected, diagnostic routines may safely be eliminated from the reboot process.

Method for fast system recovery via degraded reboot

An arbitration mechanism is provided for arbitrating between redundant controllers having outputs electrically connected together and provided as input to at least one device under control. The arbitration mechanism includes logic for automatically determining which controller of the redundant controllers is active controller, and a hardware output interlock for the redundant controllers to ensure that output controlled by only the active controller is enabled as input to the at least one device. The arbitration mechanism also includes logic for monitoring the active controller for failure, and upon detection of failure, for automatically switching active control to another controller of the redundant controllers transparent to the at least one device.

Arbitration system for redundant controllers, with output interlock and automatic switching capabilities

In response to the start of an initialization sequence at a service processor, if power to a main processor was interrupted at a most-recent time that an operating system executed on the main processor, power to the main processor is turned on, the operating system is started executing on the main processor, data from the non-volatile memory of the service processor is provided to the operating system, and the service processor is reset, which restarts the initialization sequence. If the power to the main processor was not interrupted at the most-recent time that the operating system executed on the main processor, and if the operating system is currently executing on the main processor, a monitoring function is started in the service processor, which monitors for errors at a computer system.

Initialization after a power interruption

The aspects of the present invention provide a computer implemented method, an apparatus, and a computer usable program code for identifying a service processor with current setting information. First stored information for a service processor is retrieved from a first memory in the first service processor. Second stored information for the service processor is retrieved from a second memory in a data processing system to which the service processor is connected. The first stored information is compared with the second stored information to form a comparison as to whether the service processor was previously connected to the data processing system and to determine whether the service processor was a last service processor to fully communicate with system firmware in the data processing system. The service processor has current setting information if the service processor was previously connected to the data processing system and was the last service processor to fully communicate with the system firmware.

Method and apparatus for identifying a service processor with current setting information

A method of providing arbitration for redundant controllers is provided, which includes: providing logic for automatically determining which controller of redundant controllers is active controller, wherein outputs of the redundant controllers are electrically hardwired together and provided as input to a device; and providing first and second hardware arbitration components for first and second controllers of the redundant controllers, each hardware arbitration component ensuring that outputs of the respective controller are enabled only when the associated controller is active controller. The first and second hardware arbitration components are separate hardware components which communicate and cooperate as a distributed hardware interlock mechanism that ensures outputs of only one controller are enabled at a time. More particularly, the hardware arbitration components each include a hardware state machine to enable/disable outputs of the associated controller and ensure that outputs of only the active controller are enabled as input to the device.

Arbitration method and system for redundant controllers, with output interlock and automatic switching capabilities

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Austin, TX, United States of America

Gary Dean Anderson