arm64: barrier: Add CSDB macros to control data-value prediction

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For CPUs capable of data value prediction, CSDB waits for any outstanding
predictions to architecturally resolve before allowing speculative execution
to continue. Provide macros to expose it to the arch code.

Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Will Deacon 2018-02-05 15:34:16 +00:00 • committed by Catalin Marinas

parent 439e70e27a

commit 669474e772

2 changed files with 8 additions and 0 deletions

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arch/arm64/include/asm/assembler.h

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arch/arm64/include/asm/barrier.h

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