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lib: Upgrade to full flush if size is at least threshold
Currently, we upgrade to a full tlb flush only If a tlb flush request size is greater than the threshold. This is done as sfence in RISC-V can only flush 4KB at a time. Doing a large number of flushes page by page impacts the performance. It is better to do a full tlbflush if the request size is at least equal to the threshold size. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
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@ -232,7 +232,7 @@ int sbi_tlb_fifo_update(struct sbi_scratch *rscratch, u32 hartid, void *data)
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* upgrade it to flush all because we can only flush
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* 4KB at a time.
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*/
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if (tinfo->size >= SBI_TLB_FLUSH_MAX_SIZE) {
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if (tinfo->size > SBI_TLB_FLUSH_MAX_SIZE) {
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tinfo->start = 0;
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tinfo->size = SBI_TLB_FLUSH_ALL;
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}
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