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docs: Update vfio-user.md documentation to describe hotplug

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Signed-off-by: Rob Bradford <robert.bradford@intel.com>
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Rob Bradford 2021-08-12 11:30:56 +00:00
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@ -4,11 +4,11 @@ VFIO-user is an *experimental* protocol for allowing devices to be implemented i
The protocol is documented here: https://github.com/nutanix/libvfio-user/blob/master/docs/vfio-user.rst
The Cloud Hypervisor support for such devices is *experimental*. Not all Cloud Hypervisor functionality is supported in particular: hotplug, virtio-mem and iommu are not supported.
The Cloud Hypervisor support for such devices is *experimental*. Not all Cloud Hypervisor functionality is supported in particular: virtio-mem and iommu are not supported.
## Usage
The `--user-device socket=<path>` parameter is used to create a vfio-user device when creating the VM specifying the socket to connect to.
The `--user-device socket=<path>` parameter is used to create a vfio-user device when creating the VM specifying the socket to connect to. The device can also be hotplugged with `ch-remote add-user-device socket=<path>`.
## Example (GPIO device)