Re: [PATCH 3/3] arm64: mm: Re-enable OPTIMIZE_HUGETLB_VMEMMAP

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To: Nanyong Sun <sunnanyong@xxxxxxxxxx>
Subject: Re: [PATCH 3/3] arm64: mm: Re-enable OPTIMIZE_HUGETLB_VMEMMAP
From: Muchun Song <muchun.song@xxxxxxxxx>
Date: Fri, 15 Dec 2023 12:37:29 +0800
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Mike Kravetz <mike.kravetz@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Anshuman Khandual <anshuman.khandual@xxxxxxx>, "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>, Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, LKML <linux-kernel@xxxxxxxxxxxxxxx>, Linux-MM <linux-mm@xxxxxxxxx>
In-reply-to: <20231214073912.1938330-4-sunnanyong@huawei.com>
References: <20231214073912.1938330-1-sunnanyong@huawei.com> <20231214073912.1938330-4-sunnanyong@huawei.com>


> On Dec 14, 2023, at 15:39, Nanyong Sun <sunnanyong@xxxxxxxxxx> wrote:
> 
> Now update of vmemmap page table can follow the rule of
> break-before-make safely for arm64 architecture, re-enable
> HVO on arm64.
> 
> Signed-off-by: Nanyong Sun <sunnanyong@xxxxxxxxxx>

Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>

Thanks.

References:
- [PATCH 0/3] A Solution to Re-enable hugetlb vmemmap optimize on Arm
  - From: Nanyong Sun
- [PATCH 3/3] arm64: mm: Re-enable OPTIMIZE_HUGETLB_VMEMMAP
  - From: Nanyong Sun

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