[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] stable backport of 3 xen multiqueue network dev fixes
Hi Dave, Please could you queue these three: 32a8440 xen-netfront: respect user provided max_queues 4c82ac3 xen-netback: respect user provided max_queues ca88ea1 xen-netfront: update num_queues to real created for stable backports to at least 4.1. Multiqueue was added in v3.16 so I think they could all go to LTS that far back. Users are tripping over issues in the field with exhausting the number of Xen grant entries available to guests when creating large numbers of queues (which happens with guests with >=32 VCPUs). ca88ea1 is a fix which causes the failure to allocate grants for all of the desired queues gracefully, rather than crashing or failing to pass any traffic. 32a8440 and 4c82ac3 fix the handling of the module parameters on both ends so that users can choose to have fewer queues than p/vcpus if they like, which would have been an effective workaround for the issue solved by ca88ea1 if that hadn't been broken. Thanks, Ian. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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