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The ARMv8.2-DCPoP feature introduces persistent memory support to the architecture, by defining a point of persistence in the memory hierarchy, and a corresponding cache maintenance operation, DC CVAP. Expose the support via HWCAP and MRS emulation. Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>