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In SMP configurations, all TLB flushing narrower than flush_tlb_all() goes through __flush_tlb_range(). Do the same in UP configurations. This allows UP configurations to take advantage of recent improvements to the code in tlbflush.c, such as support for huge pages and flushing multiple-page ranges. Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com> Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Yunhui Cui <cuiyunhui@bytedance.com> Link: https://lore.kernel.org/r/20240327045035.368512-7-samuel.holland@sifive.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>