On Thu, May 16, 2013 at 05:21:13AM -0700, K. Y. Srinivasan wrote: > Starting with Win8, the host supports multiple sub-channels for a given > device. As in the past, the initial channel offer specifies the device and > is associated with both the type and the instance GUIDs. For performance > critical devices, the host may support multiple sub-channels. The sub-channels > share the same type and instance GUID as the primary channel. The number of > sub-channels offerrred to the guest depends on the number of virtual CPUs > assigned to the guest. The guest can request the creation of these sub-channels > and once created and opened, the guest can distribute the traffic across all > the channels (the primary and the sub-channels). A request sent on a sub-channel > will have the response delivered on the same sub-channel. > > At channel (sub-channel) creation we bind the channel interrupt to a CPU and > with this sub-channel support we will be able to spread the interrupt load > of a given device across all available CPUs. > > Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx> > Reviewed-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx> Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
