Enum cortex_a::registers::HCR_EL2::TGE::Value

#[repr(u64)]
pub enum Value {
    DisableTrapGeneralExceptionsToEl2,
    EnableTrapGeneralExceptionsToEl2,
}

Trap General Exceptions, from EL0.

If enabled:

• When EL2 is not enabled in the current Security state, this control has no effect on execution at EL0.

• When EL2 is enabled in the current Security state, in all cases:

  • All exceptions that would be routed to EL1 are routed to EL2.
  • If EL1 is using AArch64, the SCTLR_EL1.M field is treated as being 0 for all purposes other than returning the result of a direct read of SCTLR_EL1.
  • If EL1 is using AArch32, the SCTLR.M field is treated as being 0 for all purposes other than returning the result of a direct read of SCTLR.
  • All virtual interrupts are disabled.
  • Any IMPLEMENTATION DEFINED mechanisms for signaling virtual interrupts are disabled.
  • An exception return to EL1 is treated as an illegal exception return.
  • The MDCR_EL2.{TDRA, TDOSA, TDA, TDE} fields are treated as being 1 for all purposes other than returning the result of a direct read of MDCR_EL2.

• In addition, when EL2 is enabled in the current Security state, if:

  • HCR_EL2.E2H is 0, the Effective values of the HCR_EL2.{FMO, IMO, AMO} fields are 1.
  • HCR_EL2.E2H is 1, the Effective values of the HCR_EL2.{FMO, IMO, AMO} fields are 0.

• For further information on the behavior of this bit when E2H is 1, see ‘Behavior of HCR_EL2.E2H’.

Variants

DisableTrapGeneralExceptionsToEl2

EnableTrapGeneralExceptionsToEl2

Trait Implementations

impl TryFromValue<u64> for Value

type EnumType = Value

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