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ARMv8.4-TLBI provides TLBI invalidation instruction that apply to a range of input addresses. This patch detect this feature. Signed-off-by: Zhenyu Ye <yezhenyu2@huawei.com> Link: https://lore.kernel.org/r/20200715071945.897-2-yezhenyu2@huawei.com [catalin.marinas@arm.com: some renaming for consistency] Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>