TLBI ALLE2OS, TLB Invalidate All, EL2, Outer Shareable
The TLBI ALLE2OS characteristics are:
Purpose
If EL2 is implemented and enabled in the current Security state, invalidates cached copies of translation table entries from TLBs that meet all the following requirements:
-
The entry is a stage 1 translation table entry, from any level of the translation table walk.
-
If SCR_EL3.NS is 1 and the entry would be required to translate an address using the Non-secure EL2 or Non-secure EL2&0 translation regime.
-
If SCR_EL3.NS is 0 and the entry would be required to translate an address using the Secure EL2 or Secure EL2&0 translation regime.
The invalidation applies to all PEs in the same Outer Shareable shareability domain as the PE that executes this System instruction.
Configuration
This instruction is present only when ARMv8.4-TLBI is implemented. Otherwise, direct accesses to TLBI ALLE2OS are UNDEFINED.
Attributes
TLBI ALLE2OS is a 64-bit System instruction.
Field descriptions
TLBI ALLE2OS 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 TLBI ALLE2OS instruction
Accesses to this instruction use the following encodings:
TLBI ALLE2OS{, <Xt>}
op0 | op1 | CRn | CRm | op2 | Rt |
---|---|---|---|---|---|
0b01 | 0b100 | 0b1000 | 0b0001 | 0b000 | 0b11111 |
if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if EL2Enabled() && HCR_EL2.NV == '1' then AArch64.SystemAccessTrap(EL2, 0x18); else UNDEFINED; elsif PSTATE.EL == EL2 then TLBI_ALLE2OS(); elsif PSTATE.EL == EL3 then if !EL2Enabled() then UNDEFINED; else TLBI_ALLE2OS();