TLBIASIDIS | Jon's Arm Reference

Invalidate all cached copies of translation table entries from TLBs that meet the following requirements:

The entry is a stage 1 translation table entry.
The entry would be used for the specified ASID, and either:
- Is from a level of lookup above the final level.
- Is a non-global entry from the final level of lookup.
If EL2 is implemented and enabled in the current Security state, the entry would be used with the current VMID.

From the entries that match these requirements, the entries that are invalidated are required for the following translation regime:

If executed at Secure EL1 when EL3 is using AArch64, the Secure EL1&0 translation regime.
If executed in Secure state when EL3 is using AArch32, the Secure PL1&0 translation regime.
If executed in Non-secure state, the Non-secure PL1&0 translation regime.

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

Configuration

This instruction is present only when FEAT_AA32EL1 is implemented. Otherwise, direct accesses to TLBIASIDIS are UNDEFINED.

Attributes

Field descriptions

Bits [31:8]:

ASID, bits [7:0]:

Executing TLBIASIDIS

The following pseudocode describes traps which apply to the System instruction. For information about changes to the scope of the invalidation to the instruction under different conditions, see the relevant instruction in the Pseudocode for AArch32 operation.

Accesses to this instruction use the following encodings in the System instruction encoding space:

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

(coproc = 0b1111, opc1 = 0b000, CRn = 0b1000, CRm = 0b0011, opc2 = 0b010)

if !IsFeatureImplemented(FEAT_AA32EL1) then Undefined(); elsif PSTATE.EL == EL0 then Undefined(); elsif PSTATE.EL == EL1 then if EL2Enabled() && IsFeatureImplemented(FEAT_AA64EL2) && !ELUsingAArch32(EL2) && HSTR_EL2().T8 == '1' then AArch64_AArch32SystemAccessTrap(EL2, 0x03); elsif EL2Enabled() && IsFeatureImplemented(FEAT_AA32EL2) && ELUsingAArch32(EL2) && HSTR().T8 == '1' then AArch32_TakeHypTrapException(0x03); elsif EL2Enabled() && IsFeatureImplemented(FEAT_AA64EL2) && !ELUsingAArch32(EL2) && HCR_EL2().TTLB == '1' then AArch64_AArch32SystemAccessTrap(EL2, 0x03); elsif EL2Enabled() && IsFeatureImplemented(FEAT_AA64EL2) && !ELUsingAArch32(EL2) && HCR_EL2().TTLBIS == '1' then AArch64_AArch32SystemAccessTrap(EL2, 0x03); elsif EL2Enabled() && IsFeatureImplemented(FEAT_AA32EL2) && ELUsingAArch32(EL2) && HCR().TTLB == '1' then AArch32_TakeHypTrapException(0x03); elsif EL2Enabled() && IsFeatureImplemented(FEAT_AA32EL2) && ELUsingAArch32(EL2) && HCR2().TTLBIS == '1' then AArch32_TakeHypTrapException(0x03); else AArch32_TLBI_ASID(SecurityStateAtEL(EL1), Regime_EL10, VMID(), Broadcast_ISH, TLBI_AllAttr, R(t)); end; elsif PSTATE.EL == EL2 then AArch32_TLBI_ASID(SecurityStateAtEL(EL1), Regime_EL10, VMID(), Broadcast_ISH, TLBI_AllAttr, R(t)); elsif PSTATE.EL == EL3 then AArch32_TLBI_ASID(SecurityStateAtEL(EL3), Regime_EL30, VMID_NONE, Broadcast_ISH, TLBI_AllAttr, R(t)); end;

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RES0																								ASID