Re: [PATCH] MIPS: Do not flush tlb when setting pmd entry

From: Thomas Bogendoerfer
Date: Mon Jun 15 2020 - 06:16:15 EST


On Wed, Jun 03, 2020 at 05:42:13PM +0800, Bibo Mao wrote:
> Function set_pmd_at is to set pmd entry, if tlb entry need to
> be flushed, there exists pmdp_huge_clear_flush alike function
> before set_pmd_at is called. So it is not necessary to call
> flush_tlb_all in this function.

have you checked all set_pmd_at() calls ? I found a few case where
it's not clear to me, if tlb flushing is done... If you think this
is still the right thing to do, please change arch/mips/mm/pgtable-32.c
as well.

Thomas.

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