From 3f98408e2e4fb1792102aed2cd5425aa0e34cc9c Mon Sep 17 00:00:00 2001 From: Vladimir Sementsov-Ogievskiy Date: Fri, 20 Sep 2024 12:49:36 +0300 Subject: qapi: introduce device-sync-config Add command to sync config from vhost-user backend to the device. It may be helpful when VHOST_USER_SLAVE_CONFIG_CHANGE_MSG failed or not triggered interrupt to the guest or just not available (not supported by vhost-user server). Command result is racy if allow it during migration. Let's not allow that. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Markus Armbruster Acked-by: Raphael Norwitz Message-Id: <20240920094936.450987-4-vsementsov@yandex-team.ru> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/virtio/virtio-pci.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'hw/virtio/virtio-pci.c') diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index 4d832fe..c5a809b 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -2385,6 +2385,14 @@ static void virtio_pci_dc_realize(DeviceState *qdev, Error **errp) vpciklass->parent_dc_realize(qdev, errp); } +static int virtio_pci_sync_config(DeviceState *dev, Error **errp) +{ + VirtIOPCIProxy *proxy = VIRTIO_PCI(dev); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); + + return qdev_sync_config(DEVICE(vdev), errp); +} + static void virtio_pci_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); @@ -2401,6 +2409,7 @@ static void virtio_pci_class_init(ObjectClass *klass, void *data) device_class_set_parent_realize(dc, virtio_pci_dc_realize, &vpciklass->parent_dc_realize); rc->phases.hold = virtio_pci_bus_reset_hold; + dc->sync_config = virtio_pci_sync_config; } static const TypeInfo virtio_pci_info = { -- cgit v1.1