65 lines
2.5 KiB
Diff
65 lines
2.5 KiB
Diff
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From 745bbf64b2a1e74366550bffbb68da1df2a9f378 Mon Sep 17 00:00:00 2001
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From: fangyi <eric.fangyi@huawei.com>
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Date: Mon, 4 Dec 2023 15:13:41 +0800
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Subject: [PATCH] vhost: add vhost_dev_suspend/resume_op
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Signed-off-by: jiangdongxu <jiangdongxu1@huawei.com>
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Signed-off-by: fangyi <eric.fangyi@huawei.com>
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---
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include/hw/virtio/vhost-backend.h | 5 +++++
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linux-headers/linux/vhost.h | 17 +++++++++++++++++
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2 files changed, 22 insertions(+)
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diff --git a/include/hw/virtio/vhost-backend.h b/include/hw/virtio/vhost-backend.h
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index 86154dd0b2..2ca6250567 100644
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--- a/include/hw/virtio/vhost-backend.h
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+++ b/include/hw/virtio/vhost-backend.h
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@@ -135,6 +135,9 @@ typedef int (*vhost_set_config_call_op)(struct vhost_dev *dev,
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typedef void (*vhost_set_used_memslots_op)(struct vhost_dev *dev);
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typedef unsigned int (*vhost_get_used_memslots_op)(void);
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+typedef int (*vhost_dev_suspend_op)(struct vhost_dev *dev);
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+typedef int (*vhost_dev_resume_op)(struct vhost_dev *dev);
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+
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typedef struct VhostOps {
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VhostBackendType backend_type;
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vhost_backend_init vhost_backend_init;
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@@ -186,6 +189,8 @@ typedef struct VhostOps {
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vhost_set_config_call_op vhost_set_config_call;
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vhost_set_used_memslots_op vhost_set_used_memslots;
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vhost_get_used_memslots_op vhost_get_used_memslots;
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+ vhost_dev_suspend_op vhost_dev_suspend;
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+ vhost_dev_resume_op vhost_dev_resume;
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} VhostOps;
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int vhost_backend_update_device_iotlb(struct vhost_dev *dev,
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diff --git a/linux-headers/linux/vhost.h b/linux-headers/linux/vhost.h
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index 65c6b49788..9b3f71b20f 100644
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--- a/linux-headers/linux/vhost.h
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+++ b/linux-headers/linux/vhost.h
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@@ -175,4 +175,21 @@
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#define VHOST_VDPA_SET_GROUP_ASID _IOW(VHOST_VIRTIO, 0x7C, \
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struct vhost_vring_state)
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+/* Suspend a device so it does not process virtqueue requests anymore
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+ *
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+ * After the return of ioctl the device must preserve all the necessary state
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+ * (the virtqueue vring base plus the possible device specific states) that is
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+ * required for restoring in the future. The device must not change its
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+ * configuration after that point.
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+ */
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+#define VHOST_VDPA_SUSPEND _IO(VHOST_VIRTIO, 0x7D)
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+
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+/* Resume a device so it can resume processing virtqueue requests
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+ *
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+ * After the return of this ioctl the device will have restored all the
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+ * necessary states and it is fully operational to continue processing the
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+ * virtqueue descriptors.
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+ */
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+#define VHOST_VDPA_RESUME _IO(VHOST_VIRTIO, 0x7E)
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+
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#endif
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--
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2.27.0
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