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TLBIIPAS2IS, TLB Invalidate by Intermediate Physical Address, Stage 2, Inner Shareable

The TLBIIPAS2IS characteristics are:

Purpose

If EL2 is implemented, invalidate all cached copies of translation table entries from TLBs that meet the following requirements:

  • The entry is a stage 2 only translation table entry, from any level of the translation table walk.
  • SCR.NS is 1.
  • The entry would be used for the specified IPA.
  • The entry would be used with the current VMID.
  • The entry would be required for the PL1&0 translation regime.

The invalidation is not required to apply to caching structures that combine stage 1 and stage 2 translation table entries.

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

Configuration

Note

This System instruction is not implemented in architecture versions before Armv8.

Attributes

TLBIIPAS2IS is a 32-bit System instruction.

Field descriptions

The TLBIIPAS2IS input value bit assignments are:

313029282726252423222120191817161514131211109876543210
0000IPA[39:12]

Bits [31:28]

Reserved, RES0.

IPA[39:12], bits [27:0]

Bits[39:12] of the intermediate physical address to match.

Executing the TLBIIPAS2IS 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>}

opc1opc2CRncoprocCRm
0b1000b0010b10000b11110b0000
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
    TLBIIPAS2(R[t]);
elsif PSTATE.EL == EL3 then
    if !HaveEL(EL2) then
        UNDEFINED;
    elsif SCR.NS == '0' then
        //no operation
    else
        TLBIIPAS2(R[t]);
              


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