arm64: tlb: Avoid synchronous TLBIs when freeing page tables
By selecting HAVE_RCU_TABLE_INVALIDATE, we can rely on tlb_flush() being called if we fail to batch table pages for freeing. This in turn allows us to postpone walk-cache invalidation until tlb_finish_mmu(), which avoids lots of unnecessary DSBs and means we can shoot down the ASID if the range is large enough. Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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