Commit 6efb16b1 authored by Atish Patra's avatar Atish Patra Committed by Paul Walmsley

RISC-V: Issue a tlb page flush if possible

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: default avatarAtish Patra <atish.patra@wdc.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarPaul Walmsley <paul.walmsley@sifive.com>
parent 31738ede
...@@ -27,7 +27,10 @@ static void __sbi_tlb_flush_range(struct cpumask *cmask, unsigned long start, ...@@ -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) { if (cpumask_any_but(cmask, cpuid) >= nr_cpu_ids) {
/* local cpu is the only cpu present in cpumask */ /* 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 { } else {
riscv_cpuid_to_hartid_mask(cmask, &hmask); riscv_cpuid_to_hartid_mask(cmask, &hmask);
sbi_remote_sfence_vma(cpumask_bits(&hmask), start, size); sbi_remote_sfence_vma(cpumask_bits(&hmask), start, size);
......
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