Enum cortex_a::registers::HCR_EL2::IMO::Value

#[repr(u64)]
pub enum Value {
    DisableVirtualIRQ,
    EnableVirtualIRQ,
}

Physical IRQ Routing.

If this bit is 0:

• When executing at Exception levels below EL2, and EL2 is enabled in the current Security state:
  • When the value of HCR_EL2.TGE is 0, Physical IRQ interrupts are not taken to EL2.
  • When the value of HCR_EL2.TGE is 1, Physical IRQ interrupts are taken to EL2 unless they are routed to EL3.
  • Virtual IRQ interrupts are disabled.

If this bit is 1:

• When executing at any Exception level, and EL2 is enabled in the current Security state:
  • Physical IRQ interrupts are taken to EL2, unless they are routed to EL3.
  • When the value of HCR_EL2.TGE is 0, then Virtual IRQ interrupts are enabled.

If EL2 is enabled in the current Security state, and the value of HCR_EL2.TGE is 1:

• Regardless of the value of the IMO bit, physical IRQ Interrupts target EL2 unless they are routed to EL3.
• When FEAT_VHE is not implemented, or if HCR_EL2.E2H is 0, this field behaves as 1 for all purposes other than a direct read of the value of this bit.
• When FEAT_VHE is implemented and HCR_EL2.E2H is 1, this field behaves as 0 for all purposes other than a direct read of the value of this bit.

For more information, see ‘Asynchronous exception routing’.

Variants

DisableVirtualIRQ

EnableVirtualIRQ

Trait Implementations

impl TryFromValue<u64> for Value

type EnumType = Value

fn try_from(v: u64) -> Option<Self::EnumType>