TLBIALLNSNH, TLB Invalidate All, Non-Secure Non-Hyp

The TLBIALLNSNH characteristics are:

Purpose

If EL2 is implemented, invalidate all cached copies of translation table entries from TLBs that are from any level of the translation table walk that would be required for stage 1 or stage 2 of the Non-secure PL1&0 translation regime, regardless of the associated VMID.

The invalidation only applies to the PE that executes this System instruction.

Configuration

Attributes

TLBIALLNSNH is a 32-bit System instruction.

Field descriptions

TLBIALLNSNH ignores the value in the register specified by the instruction encoding. Software does not have to write a value to the register before issuing this instruction.

Executing the TLBIALLNSNH instruction

If this instruction is executed in a Secure privileged mode other than Monitor mode, then the behavior is CONSTRAINED UNPREDICTABLE, and one of the following behaviors must occur:

Accesses to this instruction use the following encodings:

MCR{<c>}{<q>} <coproc>, {#}<opc1>, <Rt>, <CRn>, <CRm>{, {#}<opc2>}

coprocopc1CRnCRmopc2
0b11110b1000b10000b01110b100

if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if EL2Enabled() && !ELUsingAArch32(EL2) && HSTR_EL2.T8 == '1' then AArch64.AArch32SystemAccessTrap(EL2, 0x03); elsif EL2Enabled() && ELUsingAArch32(EL2) && HSTR.T8 == '1' then AArch32.TakeHypTrapException(0x03); else UNDEFINED; elsif PSTATE.EL == EL2 then TLBIALLNSNH(); elsif PSTATE.EL == EL3 then if !HaveEL(EL2) then UNDEFINED; else TLBIALLNSNH();




27/03/2019 21:59; e5e4db499bf9867a4b93324c4dbac985d3da9376

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