463ba1e3b8
Shadow CVQ will copy buffers on qemu VA, so we avoid TOCTOU attacks from the guest that could set a different state in qemu device model and vdpa device. To do so, it needs to be able to map these new buffers to the device. Signed-off-by: Eugenio Pérez <eperezma@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/*
|
|
* vhost-vdpa.h
|
|
*
|
|
* Copyright(c) 2017-2018 Intel Corporation.
|
|
* Copyright(c) 2020 Red Hat, Inc.
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#ifndef HW_VIRTIO_VHOST_VDPA_H
|
|
#define HW_VIRTIO_VHOST_VDPA_H
|
|
|
|
#include <gmodule.h>
|
|
|
|
#include "hw/virtio/vhost-iova-tree.h"
|
|
#include "hw/virtio/virtio.h"
|
|
#include "standard-headers/linux/vhost_types.h"
|
|
|
|
typedef struct VhostVDPAHostNotifier {
|
|
MemoryRegion mr;
|
|
void *addr;
|
|
} VhostVDPAHostNotifier;
|
|
|
|
typedef struct vhost_vdpa {
|
|
int device_fd;
|
|
int index;
|
|
uint32_t msg_type;
|
|
bool iotlb_batch_begin_sent;
|
|
MemoryListener listener;
|
|
struct vhost_vdpa_iova_range iova_range;
|
|
uint64_t acked_features;
|
|
bool shadow_vqs_enabled;
|
|
/* IOVA mapping used by the Shadow Virtqueue */
|
|
VhostIOVATree *iova_tree;
|
|
GPtrArray *shadow_vqs;
|
|
struct vhost_dev *dev;
|
|
VhostVDPAHostNotifier notifier[VIRTIO_QUEUE_MAX];
|
|
} VhostVDPA;
|
|
|
|
int vhost_vdpa_dma_map(struct vhost_vdpa *v, hwaddr iova, hwaddr size,
|
|
void *vaddr, bool readonly);
|
|
int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, hwaddr iova, hwaddr size);
|
|
|
|
#endif
|