pub enum HypervisorCap {
    ArmPmuV3,
    ImmediateExit,
    S390UserSigp,
    TscDeadlineTimer,
    UserMemory,
    Xcrs,
    CalibratedTscLeafRequired,
    StaticSwiotlbAllocationRequired,
    HypervisorInitializedBootContext,
}
Expand description

An enumeration of different hypervisor capabilities.

Variants§

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ArmPmuV3

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ImmediateExit

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S390UserSigp

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TscDeadlineTimer

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UserMemory

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Xcrs

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CalibratedTscLeafRequired

CPUID leaf 0x15 is available on some Intel chips and contains the TSC frequency, which can be used to calibrate the guest’s TSC clocksource; however, it is not typically accurate enough (being off by 1-2% is a big problem for a clocksource), and inside the guest, calibration by other means is not always reliable.

Hypervisors which do not provide the TSC frequency (e.g. via the kvm pvclock) or have another suitable calibration source can declare this capability, which causes crosvm to substitute a calibrated value in leaf 0x15 that will be accurate enough for use in a clocksource.

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StaticSwiotlbAllocationRequired

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HypervisorInitializedBootContext

Some hypervisors (presently: Gunyah) will configure initial boot-time registers for vCPUs without need for CrosVM to specify.

If this capability is declared, then crosvm will not try to initialize vcpu registers when creating the VM.

Trait Implementations§

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impl Clone for HypervisorCap

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fn clone(&self) -> HypervisorCap

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for HypervisorCap

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl PartialEq for HypervisorCap

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fn eq(&self, other: &HypervisorCap) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl TryFrom<HypervisorCap> for KvmCap

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type Error = Error

The type returned in the event of a conversion error.
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fn try_from(cap: HypervisorCap) -> Result<KvmCap>

Performs the conversion.
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impl Copy for HypervisorCap

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impl Eq for HypervisorCap

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impl StructuralPartialEq for HypervisorCap

Auto Trait Implementations§

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impl<T> Any for T
where 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 T
where 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 T
where 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 T
where T: Any,

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

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>) -> Rc<dyn Any>

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 T
where T: Any + Send + Sync,

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

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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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.