The TLBI VMALLE1OS characteristics are:
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.
When EL2 is implemented and enabled in the Security state described by the current value of SCR_EL3.NS:
When EL2 is not implemented or is disabled in the current Security state, the entry would be required to translate the specified VA using the EL1&0 translation regime.
The invalidation applies to all PEs in the same Outer Shareable shareability domain as the PE that executes this System instruction.
When a TLB maintenance instruction is generated to the Secure EL1&0 translation regime and is defined to pass a VMID argument, or would be defined to pass a VMID argument if SCR_EL3.EEL2==1, then:
For the EL1&0 translation regimes, the invalidation applies to both global entries, and non-global entries with any ASID.
This instruction is present only when FEAT_TLBIOS is implemented. Otherwise, direct accesses to TLBI VMALLE1OS are UNDEFINED.
TLBI VMALLE1OS is a 64-bit System instruction.
This instruction has no applicable fields.
The value in the register specified by <Xt> is ignored.
When executing this instruction Xt should be encoded as 0b11111. If the Xt field is not set to 0b11111, it is CONSTRAINED UNPREDICTABLE whether:
The instruction is UNDEFINED.
The instruction behaves as if the Xt field is set to 0b11111.
Accesses to this instruction use the following encodings:
op0 | op1 | CRn | CRm | op2 |
---|---|---|---|---|
0b01 | 0b000 | 0b1000 | 0b0001 | 0b000 |
if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if EL2Enabled() && HCR_EL2.TTLB == '1' then AArch64.SystemAccessTrap(EL2, 0x18); elsif EL2Enabled() && HCR_EL2.TTLBOS == '1' then AArch64.SystemAccessTrap(EL2, 0x18); elsif EL2Enabled() && (!HaveEL(EL3) || SCR_EL3.FGTEn == '1') && HFGITR_EL2.TLBIVMALLE1OS == '1' then AArch64.SystemAccessTrap(EL2, 0x18); else TLBI_VMALLE1OS(); elsif PSTATE.EL == EL2 then TLBI_VMALLE1OS(); elsif PSTATE.EL == EL3 then TLBI_VMALLE1OS();
01/07/2020 15:57; 80324f0b9997bede489cc15ad1565345720bcd2a
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