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vmm: Implement VM resume

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To resume a VM, we unpark all its vCPU threads.

Fixes: #333

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Samuel Ortiz
2019-10-10 17:34:55 +02:00
committed by Sebastien Boeuf
parent 4ac0cb9cff
commit dbbd04a4cf
6 changed files with 72 additions and 2 deletions
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14
vmm/src/api/mod.rs
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@@ -79,6 +79,9 @@ pub enum ApiError {
/// The VM could not be paused.
VmPause(VmError),
/// The VM could not resume.
VmResume(VmError),
/// The VM is not booted.
VmNotBooted,
@@ -138,6 +141,9 @@ pub enum ApiRequest {
/// Pause a VM.
VmPause(Sender<ApiResponse>),
/// Resume a VM.
VmResume(Sender<ApiResponse>),
/// Shut the previously booted virtual machine down.
/// If the VM was not previously booted or created, the VMM API server
/// will send a VmShutdown error back.
@@ -190,6 +196,9 @@ pub enum VmAction {
/// Pause a VM
Pause,
/// Resume a VM
Resume,
}
fn vm_action(api_evt: EventFd, api_sender: Sender<ApiRequest>, action: VmAction) -> ApiResult<()> {
@@ -201,6 +210,7 @@ fn vm_action(api_evt: EventFd, api_sender: Sender<ApiRequest>, action: VmAction)
VmAction::Shutdown => ApiRequest::VmShutdown(response_sender),
VmAction::Reboot => ApiRequest::VmReboot(response_sender),
VmAction::Pause => ApiRequest::VmPause(response_sender),
VmAction::Resume => ApiRequest::VmResume(response_sender),
};
// Send the VM request.
@@ -232,6 +242,10 @@ pub fn vm_pause(api_evt: EventFd, api_sender: Sender<ApiRequest>) -> ApiResult<(
vm_action(api_evt, api_sender, VmAction::Pause)
}
pub fn vm_resume(api_evt: EventFd, api_sender: Sender<ApiRequest>) -> ApiResult<()> {
vm_action(api_evt, api_sender, VmAction::Resume)
}
pub fn vm_info(api_evt: EventFd, api_sender: Sender<ApiRequest>) -> ApiResult<VmInfo> {
let (response_sender, response_receiver) = channel();