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vmm: Implement VM pause

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In order to pause a VM, we signal all the vCPU threads to get them out
of vmx non-root. Once out, the vCPU thread will check for a an atomic
pause boolean. If it's set to true, then the thread will park until
being resumed.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Samuel Ortiz
2019-10-10 17:16:58 +02:00
committed by Sebastien Boeuf
parent 80c3fd922a
commit 4ac0cb9cff
6 changed files with 88 additions and 2 deletions
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16
vmm/src/lib.rs
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@@ -227,6 +227,14 @@ impl Vmm {
}
}
fn vm_pause(&mut self) -> result::Result<(), VmError> {
if let Some(ref mut vm) = self.vm {
vm.pause()
} else {
Err(VmError::VmNotBooted)
}
}
fn vm_shutdown(&mut self) -> result::Result<(), VmError> {
if let Some(ref mut vm) = self.vm.take() {
vm.shutdown()
@@ -414,6 +422,14 @@ impl Vmm {
sender.send(response).map_err(Error::ApiResponseSend)?;
}
ApiRequest::VmPause(sender) => {
let response = self
.vm_pause()
.map_err(ApiError::VmPause)
.map(|_| ApiResponsePayload::Empty);
sender.send(response).map_err(Error::ApiResponseSend)?;
}
ApiRequest::VmmShutdown(sender) => {
let response = self
.vmm_shutdown()