Enum aarch64::regs::SCTLR_EL1::NTWE::Value

#[repr(u64)]
pub enum Value {
    Trap = 0,
    DontTrap = 1,
}

Traps EL0 execution of WFE instructions to EL1, from both Execution states.

0 Any attempt to execute a WFE instruction at EL0 is trapped to EL1, if the instruction would otherwise have caused the PE to enter a low-power state.

1 This control does not cause any instructions to be trapped.

In AArch32 state, the attempted execution of a conditional WFE instruction is only trapped if the instruction passes its condition code check.

Note:

Since a WFE or WFI can complete at any time, even without a Wakeup event, the traps on WFE of WFI are not guaranteed to be taken, even if the WFE or WFI is executed when there is no Wakeup event. The only guarantee is that if the instruction does not complete in finite time in the absence of a Wakeup event, the trap will be taken.

When ARMv8.1-VHE is implemented, and the value of HCR_EL2.{E2H, TGE} is {1, 1}, this bit has no effect on execution at EL0.

Variants

Trap = 0

DontTrap = 1

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl PartialEq for Value

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

This method tests for self and other values to be equal, and is used by ==.

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.

impl TryFromValue<u64> for Value

type EnumType = Value

fn try_from_value(v: u64) -> Option<<Value as TryFromValue<u64>>::EnumType>

impl Copy for Value

impl Eq for Value

impl StructuralPartialEq for Value