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This patch introduces VHOST_USER_PROTOCOL_F_HOST_NOTIFIER. With this feature negotiated, vhost-user backend can register memory region based host notifiers. And it will allow the guest driver in the VM to notify the hardware accelerator at the vhost-user backend directly. Signed-off-by: Tiwei Bie <tiwei.bie@intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
29 lines
636 B
C
29 lines
636 B
C
/*
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* Copyright (c) 2017-2018 Intel Corporation
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*
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* This work is licensed under the terms of the GNU GPL, version 2.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef HW_VIRTIO_VHOST_USER_H
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#define HW_VIRTIO_VHOST_USER_H
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#include "chardev/char-fe.h"
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#include "hw/virtio/virtio.h"
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typedef struct VhostUserHostNotifier {
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MemoryRegion mr;
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void *addr;
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bool set;
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} VhostUserHostNotifier;
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typedef struct VhostUserState {
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CharBackend *chr;
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VhostUserHostNotifier notifier[VIRTIO_QUEUE_MAX];
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} VhostUserState;
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VhostUserState *vhost_user_init(void);
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void vhost_user_cleanup(VhostUserState *user);
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#endif
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