Conghui Chen f4fcf5d6eb dm: virtio: remove hv_caps from virtio_ops ...

currently, each virtio device has their own virtio_ops implementation.
Take virtio-blk for example:

static struct virtio_ops virtio_blk_ops = {
        "virtio_blk",
        1,
        sizeof(struct virtio_blk_config),
        virtio_blk_reset,
        virtio_blk_notify,
        virtio_blk_cfgread,
        virtio_blk_cfgwrite,
        NULL,
        NULL,
        VIRTIO_BLK_S_HOSTCAPS,
};

If start DM with two virtio-blk, this global variable will be
assigined to two virtio-blk instances. Changing hv_caps for one
instance will affect others. But different instances may need
different capabilities.

To support this requirement, we suggest to move hv_caps to
virtio_base structure, and each instance can return their own
capabilities.

Signed-off-by: Conghui Chen <conghui.chen@intel.com>
Reviewed-by: Yin Fengwei <fengwei.yin@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>

2018-08-10 10:33:21 +08:00

22 KiB

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