This patch implements the vq notification mapping support for vhost-vDPA. This is simply done by using mmap()/munmap() for the vhost-vDPA fd during device start/stop. For the device without notification mapping support, we fall back to eventfd based notification gracefully. Reviewed-by: Si-Wei Liu <si-wei.liu@oracle.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
31 lines
639 B
C
31 lines
639 B
C
/*
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* vhost-vdpa.h
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*
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* Copyright(c) 2017-2018 Intel Corporation.
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* Copyright(c) 2020 Red Hat, Inc.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef HW_VIRTIO_VHOST_VDPA_H
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#define HW_VIRTIO_VHOST_VDPA_H
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#include "hw/virtio/virtio.h"
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typedef struct VhostVDPAHostNotifier {
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MemoryRegion mr;
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void *addr;
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} VhostVDPAHostNotifier;
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typedef struct vhost_vdpa {
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int device_fd;
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uint32_t msg_type;
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MemoryListener listener;
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struct vhost_dev *dev;
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VhostVDPAHostNotifier notifier[VIRTIO_QUEUE_MAX];
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} VhostVDPA;
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#endif
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