On Sun, Jul 21, 2019 at 05:18:01AM +0530, Sukrit Bhatnagar wrote: > In v2, we had successful migration of PCI and MSIX states as well as > various DMA addresses and ring page information. > This series enables the migration of various GIDs used by the device. > > We have switched to a setup having two hosts and two VMs running atop them. > Migrations are now performed over the local network. This has settled the > same-host issue with libvirt. > > We also have performed various ping-pong tests (ibv_rc_pingpong) in the > guest(s) after adding GID migration support and this is the current status: > - ping-pong to localhost succeeds, when performed before starting the > migration and after the completion of migration. > - ping-pong to a peer succeeds, both before and after migration as above, > provided that both VMs are running on/migrated to the same host. > So, if two VMs were started on two different hosts, and one of them > was migrated to the other host, the ping-pong was successful. > Similarly, if two VMs are migrated to the same host, then after migration, > the ping-pong was successful. > - ping-pong to a peer on the remote host is not working as of now. > > Our next goal is to achieve successful migration with live traffic.
As this is a major milestone which enable live migration (still when there are no QPs), i believe we are ok for a patch. Yuval > > This series can be also found at: > https://github.com/skrtbhtngr/qemu/tree/gsoc19 > > > History: > > v2 -> v3: > - remove struct PVRDMAMigTmp and VMSTATE_WITH_TMP > - use predefined PVRDMA_HW_NAME for the vmsd name > - add vmsd for gids and a gid table field in pvrdma_state > - perform gid registration in pvrdma_post_load > - define pvrdma_post_save to unregister gids in the source host > > v1 -> v2: > - modify load_dsr() to make it idempotent > - switch to VMStateDescription > - add fields for PCI and MSIX state > - define a temporary struct PVRDMAMigTmp to use WITH_TMP macro > - perform mappings to CQ and event notification rings at load > - vmxnet3 issue solved by Marcel's patch > - BounceBuffer issue solved automatically by switching to VMStateDescription > > > Link(s) to v2: > https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg01848.html > https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg01849.html > https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg01850.html > > Link(s) to v1: > https://lists.gnu.org/archive/html/qemu-devel/2019-06/msg04924.html > https://lists.gnu.org/archive/html/qemu-devel/2019-06/msg04923.html > > Sukrit Bhatnagar (2): > hw/pvrdma: make DSR mapping idempotent in load_dsr() > hw/pvrdma: add live migration support > > hw/rdma/vmw/pvrdma_main.c | 94 +++++++++++++++++++++++++++++++++++---- > 1 file changed, 86 insertions(+), 8 deletions(-) > > -- > 2.21.0 >
