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virtio-devices: balloon: Simplify the resize operation

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There's no need to delegate the resize operation to the virtio-balloon
thread. This can come directly from the vmm thread which will use the
Balloon object to update the VIRTIO configuration and trigger the
interrupt for the guest to be notified.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf
2022-09-16 15:26:59 +02:00
parent 1849ffff31
commit 1a2cd44e44
2 changed files with 46 additions and 136 deletions
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22
virtio-devices/src/device.rs
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@@ -172,28 +172,6 @@ pub trait VirtioDevice: Send {
}
}
/// Helper to allow common implementation of write_config
fn write_config_helper(&self, config: &mut [u8], offset: u64, data: &[u8]) {
let config_len = config.len() as u64;
let data_len = data.len() as u64;
if offset + data_len > config_len {
error!(
"Out-of-bound access to configuration: config_len = {} offset = {:x} length = {} for {}",
config_len,
offset,
data_len,
self.device_type()
);
return;
}
if let Some(end) = offset.checked_add(config.len() as u64) {
let mut offset_config =
&mut config[offset as usize..std::cmp::min(end, config_len) as usize];
offset_config.write_all(data).unwrap();
}
}
/// Set the access platform trait to let the device perform address
/// translations if needed.
fn set_access_platform(&mut self, _access_platform: Arc<dyn AccessPlatform>) {}