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TLBIALLHIS, TLB Invalidate All, Hyp mode, Inner Shareable

The TLBIALLHIS 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 the Non-secure EL2 translation regime.

The invalidation applies to all PEs in the same Inner Shareable shareability domain as the PE that executes this System instruction.

Configuration

Attributes

TLBIALLHIS is a 32-bit System instruction.

Field descriptions

TLBIALLHIS 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 TLBIALLHIS 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:

  • The instruction is UNDEFINED.
  • The instruction is treated as a NOP.
  • The instruction executes as if it had been executed in Monitor mode.

Accesses to this instruction use the following encodings:

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

coprocopc1CRnCRmopc2
0b11110b1000b10000b00110b000
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
    TLBIALLHIS();
elsif PSTATE.EL == EL3 then
    if !HaveEL(EL2) then
        UNDEFINED;
    else
        TLBIALLHIS();
              


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