linux-kernel - Re: [PATCH 01/16] mm/huge_memory: use flush_pmd_tlb_range in move_huge

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Message-ID: <YrYDVzT48IhLhwKQ@google.com>
Date:   Fri, 24 Jun 2022 11:32:55 -0700
From:   Zach O'Keefe <zokeefe@...gle.com>
To:     Muchun Song <songmuchun@...edance.com>
Cc:     Miaohe Lin <linmiaohe@...wei.com>, akpm@...ux-foundation.org,
        shy828301@...il.com, willy@...radead.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/16] mm/huge_memory: use flush_pmd_tlb_range in
 move_huge_pmd

On 23 Jun 14:30, Muchun Song wrote:
> On Thu, Jun 23, 2022 at 01:06:12AM +0800, Miaohe Lin wrote:
> > ARCHes with special requirements for evicting THP backing TLB entries can
> > implement flush_pmd_tlb_range. Otherwise also, it can help optimize TLB
> > flush in THP regime. Using flush_pmd_tlb_range to take advantage of this
> > in move_huge_pmd.
> > 
> > Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
> 
> LGTM.
> 
> Reviewed-by: Muchun Song <songmuchun@...edace.com>

Reviewed-by: Zach O'Keefe <zokeefe@...gle.com>