This commit gives the possibility to create a virtio-mem device with
some memory already plugged into it. This is preliminary work to be
able to reboot a VM with the virtio-mem region being already resized.
Signed-off-by: Hui Zhu <teawater@antfin.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The virtio-mem driver is generating some warnings regarding both size
and alignment of the virtio-mem region if not based on 128MiB:
The alignment of the physical start address can make some memory
unusable.
The alignment of the physical end address can make some memory
unusable.
For these reasons, the current patch enforces virtio-mem regions to be
128MiB aligned and checks the size provided by the user is a multiple of
128MiB.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Implement support for associating a virtio-mem device with a specific
guest NUMA node, based on the ACPI proximity domain identifier.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In order to simplify the transition to VirtioCommon and to avoid needing
to set empty fields derive Default for VirtioCommon.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
As we never join the spawned virtio-devices worker threads, the error
returned from each worker thread is lost. For now, we simply print out
the error from each worker thread.
Fixes: #1551
Signed-off-by: Bo Chen <chen.bo@intel.com>
Using the Rust Barrier mechanism, this patch forces each virtio device
to acknowledge they've been correctly paused before going further.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Instead of passing only the event type through the handle_event()
callback, we make the trait slightly more generic by providing the
epoll event to each virtio device implementation.
This is particularly useful for vsock as it will need the event set.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Migrate to EpollHelper so as to remove code that is duplicated between
multiple virtio devices.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Remove the write_config() implementations that only generate a warning
as that is now done at the VirtioDevice level.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Split the generic virtio code (queues and device type) from the
VirtioDevice trait, transport and device implementations.
This also simplifies the feature handling in vhost_user_backend as the
vm-virtio crate is no longer has any features.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
