Abstract: The different switch modules making up a distributed virtual switch may route configuration commands for hardware resources to different modules within the distributed switch using a distribution and routing layer. At least one of the switch modules maintains a routing table that defines which switch modules are responsible for which hardware resources. The switch module uses the routing tables to forward the commands on the distribution and routing layer to the responsible switch module which then ensures that the relevant hardware resources are configured.

Abstract: Error handling is simplified for a self-virtualizing IO resource that utilizes a physical function adjunct partition for a physical function in the self-virtualizing IO resource to coordinate error recovery for the self-virtualizing IO resource, by restarting each virtual function adjunct partition associated with that physical function to avoid the need to coordinate error recovery within the logical partitions to which such virtual function adjunct partitions are assigned.

Abstract: Methods, systems, and media for timed power-on in a logically partitioned environment are disclosed. Embodiments may disclose determining a time period based upon a time to launch a partition and a time of day associated with the next partition to launch. After determining the time period, a timer is set to boot the system based upon the time period. More specifically, embodiments allow the timed power-on (TPO) and time of day (TOD) of logical partitions to be modified by clients independently of other partitions by determining the system TPO based upon TPOs and TODs of logical partitions as well as the TOD of the system. Some embodiments include initiating a transaction like an interrupt in response to a change in a TPO or TOD of logical partition or the system. Several of such embodiments incorporate adjusting or re-calculating the system TPO in response to the transaction.

Abstract: Methods, apparatus, systems, and articles of manufacture for maintaining virtual real time clocks (virtual RTCs) in a logically partitioned computer system are described. Changes made to a hardware real time clock (hardware RTC) while a partition manager is not running (or is not fully operational) are tracked. The cumulative effect of these changes on the hRTC value may be captured in a clock delta variable. For some embodiments, a service processor may be configured to track the changes to the hRTC while the partition manager is not running and generate the clock delta. Upon loading, the partition manager may utilize this captured clock delta to make adjustments to vRTCs, in an effort to preserve their integrity by compensating for the changes made to the hRTC while the partition manager was not running.

Abstract: Methods, systems, and articles of manufacture for maintaining a virtual counter in a logically partitioned computer system are described. The virtual counter may be based on a remote counter. For some embodiments, while a reset to the remote counter is not in progress, a value of the virtual counter generated based on the remote counter, as well as a current value of an independent counter (e.g., running independently of the remote counter and not affected by a remote counter reset) is stored. While a reset to the remote counter is in progress, an estimated value of the virtual counter may be generated based on the previously stored value of the virtual persistent clock, the previously stored value of the independent counter, and a current value of the independent counter.

Abstract: Methods, systems, and media for timed power-on in a logically partitioned environment are disclosed. Embodiments may disclose determining a time period based upon a time to launch a partition and a time of day associated with the next partition to launch. After determining the time period, a timer is set to boot the system based upon the time period. More specifically, embodiments allow the timed power-on (TPO) and time of day (TOD) of logical partitions to be modified by clients independently of other partitions by determining the system TPO based upon TPOs and TODs of logical partitions as well as the TOD of the system. Some embodiments include initiating a transaction like an interrupt in response to a change in a TPO or TOD of logical partition or the system. Several of such embodiments incorporate adjusting or re-calculating the system TPO in response to the transaction.

Abstract: Methods, apparatus, systems, and articles of manufacture for maintaining virtual real time clocks (virtual RTCs) in a logically partitioned computer system are described. Changes made to a hardware real time clock (hardware RTC) while a partition manager is not running (or is not fully operational) are tracked. The cumulative effect of these changes on the hRTC value may be captured in a clock delta variable. For some embodiments, a service processor may be configured to track the changes to the hRTC while the partition manager is not running and generate the clock delta. Upon loading, the partition manager may utilize this captured clock delta to make adjustments to vRTCs, in an effort to preserve their integrity by compensating for the changes made to the hRTC while the partition manager was not running.