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[PATCH 0/5] NIC vhost-vdpa state restore via Shadow CVQ
From: |
Eugenio Pérez |
Subject: |
[PATCH 0/5] NIC vhost-vdpa state restore via Shadow CVQ |
Date: |
Mon, 18 Jul 2022 15:33:16 +0200 |
CVQ of net vhost-vdpa devices can be intercepted since the work of [1]. The
virtio-net device model is updated. The migration was blocked because although
the state can be megrated between VMM it was not possible to restore on the
destination NIC.
This series add support for SVQ to inject external messages without the guest's
knowledge, so before the guest is resumed all the guest visible state is
restored. It is done using standard CVQ messages, so the vhost-vdpa device does
not need to learn how to restore it: As long as they have the feature, they
know how to handle it.
This series needs SVQ CVQ support [1] and fixes [2] to be applied.
Thanks!
[1] https://lists.nongnu.org/archive/html/qemu-devel/2022-07/msg02938.html
[2] https://lists.nongnu.org/archive/html/qemu-devel/2022-07/msg02984.html
v1 from RFC:
- Do not reorder DRIVER_OK & enable patches.
- Delete leftovers
Eugenio Pérez (5):
vhost: stop transfer elem ownership in vhost_handle_guest_kick
vdpa: Extract vhost_vdpa_net_cvq_add from
vhost_vdpa_net_handle_ctrl_avail
vdpa: Make vhost_vdpa_net_cvq_map_elem accept any out sg
vdpa: Add virtio-net mac address via CVQ at start
vdpa: Delete CVQ migration blocker
include/hw/virtio/vhost-vdpa.h | 1 -
include/net/vhost-vdpa.h | 1 +
hw/net/vhost_net.c | 8 ++
hw/virtio/vhost-shadow-virtqueue.c | 10 +-
hw/virtio/vhost-vdpa.c | 11 --
net/vhost-vdpa.c | 157 +++++++++++++++++++++--------
6 files changed, 127 insertions(+), 61 deletions(-)
--
2.31.1
- [PATCH 0/5] NIC vhost-vdpa state restore via Shadow CVQ,
Eugenio Pérez <=
- [PATCH 1/5] vhost: stop transfer elem ownership in vhost_handle_guest_kick, Eugenio Pérez, 2022/07/18
- [PATCH 2/5] vdpa: Extract vhost_vdpa_net_cvq_add from vhost_vdpa_net_handle_ctrl_avail, Eugenio Pérez, 2022/07/18
- [PATCH 4/5] vdpa: Add virtio-net mac address via CVQ at start, Eugenio Pérez, 2022/07/18
- [PATCH 3/5] vdpa: Make vhost_vdpa_net_cvq_map_elem accept any out sg, Eugenio Pérez, 2022/07/18
- [PATCH 5/5] vdpa: Delete CVQ migration blocker, Eugenio Pérez, 2022/07/18