(lkml) From: Jack Morgenstein <ja...@dev.mellanox.co.il>
When creating EQs to handle CQ completion events for the PF or for VFs, we create enough EQE entries to handle completions for the max number of CQs that can use that EQ. When SRIOV is activated, the max number of CQs a VF (or the PF) can obtain is its CQ quota (determined by the Hypervisor resource tracker). Therefore, when creating an EQ, the number of EQE entries that the VF should request for that EQ is the CQ quota value (and not the total number of CQs available in the FW). Under SRIOV, the PF, also must use its CQ quota, because the resource tracker also controls how many CQs the PF can obtain. Using the FW total CQs instead of the CQ quota when creating EQs resulted wasting MTT entries, due to allocating more EQEs than were needed. Fixes: 5a0d0a6161ae ("mlx4: Structures and init/teardown for VF resource quotas") Signed-off-by: Jack Morgenstein <ja...@dev.mellanox.co.il> Reported-by: Dexuan Cui <de...@microsoft.com> Signed-off-by: Tariq Toukan <tar...@mellanox.com> -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1667007 Title: [Hyper-V] Mellanox VF driver does not support >16 vCPUs Status in linux package in Ubuntu: New Bug description: In the course of enabling SR-IOV on Azure, discovered that the Mellanox Driver with 16 or more vCPUs fails. Mellanox has submitted the following patch upstream to correct this problem. Prerequisite: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1650058 I will post the upstream commit once it lands. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667007/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp