linux-kernel - Re: [PATCH V14 4/4] LoongArch: Enable ARCH_WANT_HUGETLB_PAGE_OPTIMIZE

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Message-Id: <F610957D-A6EE-4211-9E1A-BFB9389856AD@linux.dev>
Date:   Thu, 3 Nov 2022 10:49:17 +0800
From:   Muchun Song <muchun.song@...ux.dev>
To:     Huacai Chen <chenhuacai@...ngson.cn>
Cc:     Arnd Bergmann <arnd@...db.de>, Huacai Chen <chenhuacai@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Dinh Nguyen <dinguyen@...nel.org>, loongarch@...ts.linux.dev,
        linux-arch@...r.kernel.org, Xuefeng Li <lixuefeng@...ngson.cn>,
        Guo Ren <guoren@...nel.org>, Xuerui Wang <kernel@...0n.name>,
        Jiaxun Yang <jiaxun.yang@...goat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Feiyang Chen <chenfeiyang@...ngson.cn>,
        Philippe Mathieu-Daudé <philmd@...aro.org>
Subject: Re: [PATCH V14 4/4] LoongArch: Enable
 ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP



> On Oct 27, 2022, at 20:52, Huacai Chen <chenhuacai@...ngson.cn> wrote:
> 
> From: Feiyang Chen <chenfeiyang@...ngson.cn>
> 
> The feature of minimizing overhead of struct page associated with each
> HugeTLB page is implemented on x86_64. However, the infrastructure of

I'd like to refer to this feature as HVO (more simplified).

> this feature is already there, so just select ARCH_WANT_HUGETLB_PAGE_
> OPTIMIZE_VMEMMAP is enough to enable this feature for LoongArch.
> 
> Reviewed-by: Philippe Mathieu-Daudé <philmd@...aro.org>
> Signed-off-by: Feiyang Chen <chenfeiyang@...ngson.cn>
> Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>

Acked-by: Muchun Song <songmuchun@...edance.com>

Thanks.