diff --git a/vhost-user-scsi-add-support-for-SPDK-hot-upgrade.patch b/vhost-user-scsi-add-support-for-SPDK-hot-upgrade.patch
new file mode 100644
index 0000000..8d54935
--- /dev/null
+++ b/vhost-user-scsi-add-support-for-SPDK-hot-upgrade.patch
@@ -0,0 +1,94 @@
+From 8c52233c08fe66b2e5c79fd514d4f804aa6fe427 Mon Sep 17 00:00:00 2001
+From: Jinhua Cao <caojinhua1@huawei.com>
+Date: Fri, 11 Feb 2022 20:13:50 +0800
+Subject: [PATCH] vhost-user-scsi: add support for SPDK hot upgrade
+
+In the hot upgrade scenario, the reconnection mechanism of qemu and SPDK after upgrade
+
+Signed-off-by: Jinhua Cao <caojinhua1@huawei.com>
+---
+ hw/scsi/vhost-user-scsi.c | 42 ++++++++++++++++++++++++++++++++++++++-
+ 1 file changed, 41 insertions(+), 1 deletion(-)
+
+diff --git a/hw/scsi/vhost-user-scsi.c b/hw/scsi/vhost-user-scsi.c
+index 1b2f7eed98..052740a76e 100644
+--- a/hw/scsi/vhost-user-scsi.c
++++ b/hw/scsi/vhost-user-scsi.c
+@@ -29,6 +29,9 @@
+ #include "hw/virtio/virtio-access.h"
+ #include "chardev/char-fe.h"
+ #include "sysemu/sysemu.h"
++#include "qemu/log.h"
++
++#define VHOST_USER_SCSI_RECONNECT_TIME 3
+ 
+ /* Features supported by the host application */
+ static const int user_feature_bits[] = {
+@@ -59,7 +62,7 @@ static void vhost_user_scsi_set_status(VirtIODevice *vdev, uint8_t status)
+         ret = vhost_scsi_common_start(vsc);
+         if (ret < 0) {
+             error_report("unable to start vhost-user-scsi: %s", strerror(-ret));
+-            exit(1);
++            return;
+         }
+     } else {
+         vhost_scsi_common_stop(vsc);
+@@ -89,11 +92,43 @@ static void vhost_dummy_handle_output(VirtIODevice *vdev, VirtQueue *vq)
+ {
+ }
+ 
++static void vhost_user_scsi_event(void *opaque, QEMUChrEvent event)
++{
++    int ret;
++    VHostUserSCSI *s = (VHostUserSCSI *)opaque;
++    VHostSCSICommon *vsc = VHOST_SCSI_COMMON(s);
++    VirtIODevice *vdev = VIRTIO_DEVICE(s);
++
++    qemu_log("event:%d, vdev status:%d\n", event, vdev->status);
++
++    /* if CHR_EVENT_CLOSED, do nothing */
++    if (event != CHR_EVENT_OPENED) {
++        return;
++    };
++
++    /* if status of vdev is not DRIVER_OK, just waiting.
++     * vsc should start when status change to DRIVER_OK */
++    if (!(vdev->status & VIRTIO_CONFIG_S_DRIVER_OK)) {
++        return;
++    }
++
++    /* vsc may not fully start because of vhost app stopping */
++    if (vsc->dev.started) {
++        vhost_scsi_common_stop(vsc);
++    }
++
++    ret = vhost_scsi_common_start(vsc);
++    if (ret < 0) {
++        qemu_log("unable to start vhost-user-scsi: %s\n", strerror(-ret));
++    }
++}
++
+ static void vhost_user_scsi_realize(DeviceState *dev, Error **errp)
+ {
+     VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(dev);
+     VHostUserSCSI *s = VHOST_USER_SCSI(dev);
+     VHostSCSICommon *vsc = VHOST_SCSI_COMMON(s);
++    Chardev *chr;
+     struct vhost_virtqueue *vqs = NULL;
+     Error *err = NULL;
+     int ret;
+@@ -132,6 +167,11 @@ static void vhost_user_scsi_realize(DeviceState *dev, Error **errp)
+     vsc->lun = 0;
+     vsc->target = vs->conf.boot_tpgt;
+ 
++    chr = qemu_chr_fe_get_driver(&vs->conf.chardev);
++    qemu_chr_set_reconnect_time(chr, VHOST_USER_SCSI_RECONNECT_TIME);
++    qemu_chr_fe_set_handlers(&vs->conf.chardev, NULL, NULL,
++                             vhost_user_scsi_event, NULL, s, NULL, true);
++
+     return;
+ 
+ free_vhost:
+-- 
+2.27.0
+