Enum hypervisor::BalloonEvent

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pub enum BalloonEvent {
    Inflate(MemRegion),
    Deflate(MemRegion),
    BalloonTargetReached(u64),
}

Expand description

This is intended for use with virtio-balloon, where a guest driver determines unused ranges and requests they be freed. Use without the guest’s knowledge is sure to break something.

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Inflate(MemRegion)

Balloon event when the region is acquired from the guest. The guest cannot access this region any more. The guest memory can be reclaimed by the host OS. As per virtio-balloon spec, the given address and size are intended to be page-aligned.

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Deflate(MemRegion)

Balloon event when the region is returned to the guest. VMM should reallocate memory and register it with the hypervisor for accesses by the guest.

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BalloonTargetReached(u64)

Balloon event when the requested memory size is achieved. This can be achieved through either inflation or deflation. The u64 will be the current size of the balloon in bytes.

Auto Trait Implementations§

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impl UnwindSafe for BalloonEvent

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> Downcast for Twhere T: Any,

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fn into_any(self: Box<T, Global>) -> Box<dyn Any, Global>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.

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fn into_any_rc(self: Rc<T, Global>) -> Rc<dyn Any, Global>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.

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fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.

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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.

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impl<T> DowncastSync for Twhere T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T, Global>) -> Arc<dyn Any + Sync + Send, Global>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.

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