Enum cortex_a::registers::SCTLR_EL1::UMA::Value

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

User Mask Access. Traps EL0 execution of MSR and MRS instructions that access the PSTATE.{D, A, I, F} masks to EL1, from AArch64 state only.

0 Any attempt at EL0 using AArch64 to execute an MRS , MSR(register) , or MSR(immediate) instruction that accesses the DAIF is trapped to EL1.

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

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

DontTrap

Trait Implementations

impl TryFromValue<u64> for Value

type EnumType = Value

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