cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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vhost-vsock-ccw.c (2163B)

      1/*
      2 * vhost vsock ccw implementation
      3 *
      4 * This work is licensed under the terms of the GNU GPL, version 2 or (at
      5 * your option) any later version. See the COPYING file in the top-level
      6 * directory.
      7 */
      8
      9#include "qemu/osdep.h"
     10#include "hw/qdev-properties.h"
     11#include "hw/virtio/virtio.h"
     12#include "qapi/error.h"
     13#include "qemu/module.h"
     14#include "virtio-ccw.h"
     15
     16static Property vhost_vsock_ccw_properties[] = {
     17    DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
     18                       VIRTIO_CCW_MAX_REV),
     19    DEFINE_PROP_END_OF_LIST(),
     20};
     21
     22static void vhost_vsock_ccw_realize(VirtioCcwDevice *ccw_dev, Error **errp)
     23{
     24    VHostVSockCCWState *dev = VHOST_VSOCK_CCW(ccw_dev);
     25    DeviceState *vdev = DEVICE(&dev->vdev);
     26
     27    qdev_realize(vdev, BUS(&ccw_dev->bus), errp);
     28}
     29
     30static void vhost_vsock_ccw_class_init(ObjectClass *klass, void *data)
     31{
     32    DeviceClass *dc = DEVICE_CLASS(klass);
     33    VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
     34
     35    k->realize = vhost_vsock_ccw_realize;
     36    set_bit(DEVICE_CATEGORY_MISC, dc->categories);
     37    device_class_set_props(dc, vhost_vsock_ccw_properties);
     38}
     39
     40static void vhost_vsock_ccw_instance_init(Object *obj)
     41{
     42    VHostVSockCCWState *dev = VHOST_VSOCK_CCW(obj);
     43    VirtioCcwDevice *ccw_dev = VIRTIO_CCW_DEVICE(obj);
     44    VirtIODevice *virtio_dev;
     45
     46    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
     47                                TYPE_VHOST_VSOCK);
     48
     49    virtio_dev = VIRTIO_DEVICE(&dev->vdev);
     50
     51    /*
     52     * To avoid migration issues, we force virtio version 1 only when
     53     * legacy check is enabled in the new machine types (>= 5.1).
     54     */
     55    if (!virtio_legacy_check_disabled(virtio_dev)) {
     56        ccw_dev->force_revision_1 = true;
     57    }
     58}
     59
     60static const TypeInfo vhost_vsock_ccw_info = {
     61    .name          = TYPE_VHOST_VSOCK_CCW,
     62    .parent        = TYPE_VIRTIO_CCW_DEVICE,
     63    .instance_size = sizeof(VHostVSockCCWState),
     64    .instance_init = vhost_vsock_ccw_instance_init,
     65    .class_init    = vhost_vsock_ccw_class_init,
     66};
     67
     68static void vhost_vsock_ccw_register(void)
     69{
     70    type_register_static(&vhost_vsock_ccw_info);
     71}
     72
     73type_init(vhost_vsock_ccw_register)