If tlbflush request is for page only, there is no need to do a complete local tlb shootdown.
Just do a local tlb flush for the given address. Signed-off-by: Atish Patra <[email protected]> --- arch/riscv/mm/tlbflush.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/riscv/mm/tlbflush.c b/arch/riscv/mm/tlbflush.c index 8172fbf46123..b1c04751bcf1 100644 --- a/arch/riscv/mm/tlbflush.c +++ b/arch/riscv/mm/tlbflush.c @@ -27,7 +27,10 @@ static void __sbi_tlb_flush_range(struct cpumask *cmask, unsigned long start, if (cpumask_any_but(cmask, cpuid) >= nr_cpu_ids) { /* local cpu is the only cpu present in cpumask */ - local_flush_tlb_all(); + if (size <= PAGE_SIZE) + local_flush_tlb_page(start); + else + local_flush_tlb_all(); } else { riscv_cpuid_to_hartid_mask(cmask, &hmask); sbi_remote_sfence_vma(cpumask_bits(&hmask), start, size); -- 2.21.0
