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The HACTLR2 Provides additional space to the HACTLR register to hold implementation defined trap functionality.
HACTLR2 is a 32-bit register, and is part of:
The HACTLR2 is architecturally mapped to the AArch64 ACTLR_EL2[63:32] register. See B2.6 ACTLR_EL2, Auxiliary Control Register, EL2.
RW fields in this register reset to architecturally unknown values.
Bit fields and details not provided in this description are architecturally defined. See the Arm® Architecture Reference Manual Armv8, for Armv8-A architecture profile.