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DVP

Data Value Prediction Restriction by Context prevents data value predictions, based on information gathered from earlier execution within an particular execution context, from allowing later speculative execution within that context to be observable through side-channels.

For more information, see DVP RCTX, Data Value Prediction Restriction by Context.

This is an alias of SYS. This means:

  • The encodings in this description are named to match the encodings of SYS.
  • The description of SYS gives the operational pseudocode for this instruction.

System
(Armv8.5)

313029282726252423222120191817161514131211109876543210
110101010000101101110011101Rt
Lop1CRnCRmop2

System

DVP RCTX, <Xt>

is equivalent to

SYS #3, C8, C3, #5, <Xt>

and is always the preferred disassembly.

Assembler Symbols

<Xt>

Is the 64-bit name of the general-purpose source register, encoded in the "Rt" field.

Operation

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

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