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From 229737ca91d4e81b4a14143da9981bd59b80a539 Mon Sep 17 00:00:00 2001
From: libai <libai12@huawei.com>
Date: Mon, 4 Dec 2023 15:57:35 +0800
Subject: [PATCH] vhost: implement post resume bh
Set vdpa device mig state to post start when vm post start
Signed-off-by: libai <libai12@huawei.com>
---
hw/virtio/vdpa-dev-mig.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/hw/virtio/vdpa-dev-mig.c b/hw/virtio/vdpa-dev-mig.c
index 662d4a29dc..1872f11f3f 100644
--- a/hw/virtio/vdpa-dev-mig.c
+++ b/hw/virtio/vdpa-dev-mig.c
@@ -26,6 +26,7 @@
#include "qemu/error-report.h"
#include "hw/virtio/vdpa-dev-mig.h"
#include "migration/qemu-file-types.h"
+#include "qemu/main-loop.h"
/*
* Flags used as delimiter:
@@ -218,6 +219,18 @@ err_host_notifiers:
return ret;
}
+static void vdpa_dev_migration_handle_incoming_bh(void *opaque)
+{
+ struct vhost_dev *hdev = opaque;
+ int ret;
+
+ /* Post start device, unsupport rollback if failed! */
+ ret = vhost_vdpa_set_mig_state(hdev, VDPA_DEVICE_POST_START);
+ if (ret) {
+ error_report("Failed to set state: POST_START\n");
+ }
+}
+
static void vdpa_dev_vmstate_change(void *opaque, bool running, RunState state)
{
VhostVdpaDevice *vdpa = VHOST_VDPA_DEVICE(opaque);
@@ -247,6 +260,10 @@ static void vdpa_dev_vmstate_change(void *opaque, bool running, RunState state)
if (mis->state == RUN_STATE_RESTORE_VM) {
vhost_vdpa_call(hdev, VHOST_VDPA_RESUME, NULL);
+ /* post resume */
+ mis->bh = qemu_bh_new(vdpa_dev_migration_handle_incoming_bh,
+ hdev);
+ qemu_bh_schedule(mis->bh);
}
}
}
--
2.27.0
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