From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34323) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a1E0T-0001YX-Id for qemu-devel@nongnu.org; Tue, 24 Nov 2015 08:51:42 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1a1E0P-0001ia-OH for qemu-devel@nongnu.org; Tue, 24 Nov 2015 08:51:41 -0500 Received: from mga02.intel.com ([134.134.136.20]:46811) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a1E0P-0001iS-Aq for qemu-devel@nongnu.org; Tue, 24 Nov 2015 08:51:37 -0500 From: Lan Tianyu Date: Tue, 24 Nov 2015 21:38:15 +0800 Message-Id: <1448372298-28386-1-git-send-email-tianyu.lan@intel.com> Subject: [Qemu-devel] [RFC PATCH V2 0/3] IXGBE/VFIO: Add live migration support for SRIOV NIC List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: a.motakis@virtualopensystems.com, alex.williamson@redhat.com, b.reynal@virtualopensystems.com, bhelgaas@google.com, carolyn.wyborny@intel.com, donald.c.skidmore@intel.com, eddie.dong@intel.com, nrupal.jani@intel.com, agraf@suse.de, kvm@vger.kernel.org, pbonzini@redhat.com, qemu-devel@nongnu.org, emil.s.tantilov@intel.com, gerlitz.or@gmail.com, mark.d.rustad@intel.com, mst@redhat.com, eric.auger@linaro.org, intel-wired-lan@lists.osuosl.org, jeffrey.t.kirsher@intel.com, jesse.brandeburg@intel.com, john.ronciak@intel.com, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, matthew.vick@intel.com, mitch.a.williams@intel.com, netdev@vger.kernel.org, shannon.nelson@intel.com, tianyu.lan@intel.com, weiyang@linux.vnet.ibm.com, zajec5@gmail.com 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