linux-kernel - Re: [PATCH 2/2] riscv: Enable ARCH_WANT_HUGETLB_PAGE_OPTIMIZE

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Message-ID: <CAJF2gTSmSR7uKrCGZ24+NSa31FAecOBpUh8G0SMAEV-5oFGJyQ@mail.gmail.com>
Date:   Mon, 24 Oct 2022 16:02:51 +0800
From:   Guo Ren <guoren@...nel.org>
To:     Muchun Song <muchun.song@...ux.dev>
Cc:     palmer@...belt.com, palmer@...osinc.com, heiko@...ech.de,
        arnd@...db.de, Muchun Song <songmuchun@...edance.com>,
        catalin.marinas@....com, chenhuacai@...ngson.cn,
        Conor.Dooley@...rochip.com, paul.walmsley@...ive.com,
        aou@...s.berkeley.edu, linux-arch@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-mm@...ck.org, Guo Ren <guoren@...ux.alibaba.com>
Subject: Re: [PATCH 2/2] riscv: Enable ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP

On Mon, Oct 24, 2022 at 3:07 PM Muchun Song <muchun.song@...ux.dev> wrote:
>
>
>
> > On Oct 23, 2022, at 21:32, guoren@...nel.org wrote:
> >
> > From: Guo Ren <guoren@...ux.alibaba.com>
> >
> > This patch enable the feature of "free some vmemmap pages of HugeTLB
>
> We have a new name “HVO" to refer to this feature. So I’d like to rewrite
> The changelog to something like “Enable HVO [1] for RISCV”.
Okay.

>
> > page" [1]. To make it work correct, we also need fixup PG_dcache_clean
> > setting for huge page [2].
> >
> > [1] https://lore.kernel.org/linux-doc/20210510030027.56044-1-songmuchun@bytedance.com/
> > [2] https://lore.kernel.org/linux-mm/20220302084624.33340-1-songmuchun@bytedance.com/
> >
> > Signed-off-by: Guo Ren <guoren@...ux.alibaba.com>
> > Signed-off-by: Guo Ren <guoren@...nel.org>
> > Cc: Muchun Song <songmuchun@...edance.com>
> > Cc: Huacai Chen <chenhuacai@...ngson.cn>
> > Cc: Arnd Bergmann <arnd@...db.de>
>
> I’am really glad to see more and more arches for support HVO.
>
> Acked-by: Muchun Song <songmuchun@...edance.com>
Thx

>
> Thanks.
>


-- 
Best Regards
 Guo Ren