This patchset is to propose a solution of adding live migration support for SRIOV NIC.
During migration, Qemu needs to let VF driver in the VM to know migration start and end. Qemu adds faked PCI migration capability to help to sync status between two sides during migration. Qemu triggers VF's mailbox irq via sending MSIX msg when migration status is changed. VF driver tells Qemu its mailbox vector index via the new PCI capability. In some cases(NIC is suspended or closed), VF mailbox irq is freed and VF driver can disable irq injecting via new capability. VF driver will put down nic before migration and put up again on the target machine. Lan Tianyu (3): VFIO: Add new ioctl cmd VFIO_GET_PCI_CAP_INFO PCI: Add macros for faked PCI migration capability Ixgbevf: Add migration support for ixgbevf driver drivers/net/ethernet/intel/ixgbevf/ixgbevf.h | 5 ++ drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 102 ++++++++++++++++++++++ drivers/vfio/pci/vfio_pci.c | 21 +++++ drivers/vfio/pci/vfio_pci_config.c | 38 ++++++-- drivers/vfio/pci/vfio_pci_private.h | 5 ++ include/uapi/linux/pci_regs.h | 18 +++- include/uapi/linux/vfio.h | 12 +++ 7 files changed, 194 insertions(+), 7 deletions(-) -- 1.8.4.rc0.1.g8f6a3e5.dirty -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
