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MLBI

MPAM lookaside buffer invalidate

This instruction causes invalidation of cached copies of MPAM virtual-to-physical identifier translations.

This is an alias of SYS. This means:

System
(FEAT_MPAMv2_VID)

313029282726252423222120191817161514131211109876543210
1101010100001100011100001op2xxRt
Lop1CRnCRmop2

Encoding

MLBI <mlbi_op>{, <Xt>}

is equivalent to

SYS #4, C7, C0, #<op2>{, <Xt>}

and is always the preferred disassembly.

and is the preferred disassembly when SysOp('100', '0111', '0000', op2) == Sys_MLBI.

Assembler Symbols

<mlbi_op>

Is an MLBI operation name, as listed for the MLBI system instruction group, encoded in op2[1:0]:

op2[1:0] <mlbi_op>
00100 ALLE1
01101 VMALLE1
10110 VPIDE1
11111 VPMGE1
<Xt>

Is the 64-bit name of the optional general-purpose source register, defaulting to '11111', encoded in the "Rt" field.

Operation

The description of SYS gives the operational pseudocode for this instruction.


2025-12_rel2025-09_diff_tag 2025-12-102025-11-28 16:4129:4505

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