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From: Catalin Marinas <catalin.marinas@arm.com>
To: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Will Deacon <will@kernel.org>,
	Mike Kravetz <mike.kravetz@oracle.com>,
	Muchun Song <muchun.song@linux.dev>,
	Mina Almasry <almasrymina@google.com>,
	kirill@shutemov.name, joel@joelfernandes.org,
	william.kucharski@oracle.com, kaleshsingh@google.com,
	linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, 21cnbao@gmail.com
Subject: Re: [PATCH v4] arm64: hugetlb: enable __HAVE_ARCH_FLUSH_HUGETLB_TLB_RANGE
Date: Wed, 2 Aug 2023 11:41:43 +0100	[thread overview]
Message-ID: <ZMoy56mk20mP972A@arm.com> (raw)
In-Reply-To: <20230802012731.62512-1-wangkefeng.wang@huawei.com>

On Wed, Aug 02, 2023 at 09:27:31AM +0800, Kefeng Wang wrote:
> It is better to use huge page size instead of PAGE_SIZE
> for stride when flush hugepage, which reduces the loop
> in __flush_tlb_range().
> 
> Let's support arch's flush_hugetlb_tlb_range(), which is
> used in hugetlb_unshare_all_pmds(), move_hugetlb_page_tables()
> and hugetlb_change_protection() for now.
> 
> Note, for hugepages based on contiguous bit, it has to be
> invalidated individually since the contiguous PTE bit is
> just a hint, the hardware may or may not take it into account.
> 
> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>

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WARNING: multiple messages have this Message-ID (diff)
From: Catalin Marinas <catalin.marinas@arm.com>
To: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Will Deacon <will@kernel.org>,
	Mike Kravetz <mike.kravetz@oracle.com>,
	Muchun Song <muchun.song@linux.dev>,
	Mina Almasry <almasrymina@google.com>,
	kirill@shutemov.name, joel@joelfernandes.org,
	william.kucharski@oracle.com, kaleshsingh@google.com,
	linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, 21cnbao@gmail.com
Subject: Re: [PATCH v4] arm64: hugetlb: enable __HAVE_ARCH_FLUSH_HUGETLB_TLB_RANGE
Date: Wed, 2 Aug 2023 11:41:43 +0100	[thread overview]
Message-ID: <ZMoy56mk20mP972A@arm.com> (raw)
In-Reply-To: <20230802012731.62512-1-wangkefeng.wang@huawei.com>

On Wed, Aug 02, 2023 at 09:27:31AM +0800, Kefeng Wang wrote:
> It is better to use huge page size instead of PAGE_SIZE
> for stride when flush hugepage, which reduces the loop
> in __flush_tlb_range().
> 
> Let's support arch's flush_hugetlb_tlb_range(), which is
> used in hugetlb_unshare_all_pmds(), move_hugetlb_page_tables()
> and hugetlb_change_protection() for now.
> 
> Note, for hugepages based on contiguous bit, it has to be
> invalidated individually since the contiguous PTE bit is
> just a hint, the hardware may or may not take it into account.
> 
> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>


  parent reply	other threads:[~2023-08-02 10:42 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-01  2:31 [PATCH v2 0/2] mm: hugetlb: fix mremap tlb flush Kefeng Wang
2023-08-01  2:31 ` Kefeng Wang
2023-08-01  2:31 ` [PATCH v2 1/2] mm: hugetlb: use flush_hugetlb_tlb_range() in move_hugetlb_page_tables() Kefeng Wang
2023-08-01  2:31   ` Kefeng Wang
2023-08-01  2:31 ` [PATCH v2 2/2] arm64: hugetlb: enable __HAVE_ARCH_FLUSH_HUGETLB_TLB_RANGE Kefeng Wang
2023-08-01  2:31   ` Kefeng Wang
2023-08-01  2:31   ` Muchun Song
2023-08-01  2:31     ` Muchun Song
2023-08-01 11:09   ` Catalin Marinas
2023-08-01 11:09     ` Catalin Marinas
2023-08-01 11:22     ` Kefeng Wang
2023-08-01 11:22       ` Kefeng Wang
2023-08-01 13:36       ` Kefeng Wang
2023-08-01 13:36         ` Kefeng Wang
2023-08-01 13:56   ` [PATCH v3] " Kefeng Wang
2023-08-01 13:56     ` Kefeng Wang
2023-08-01 15:28     ` Catalin Marinas
2023-08-01 15:28       ` Catalin Marinas
2023-08-02  1:27     ` [PATCH v4] " Kefeng Wang
2023-08-02  1:27       ` Kefeng Wang
2023-08-02  1:40       ` Muchun Song
2023-08-02  1:40         ` Muchun Song
2023-08-02 10:41       ` Catalin Marinas [this message]
2023-08-02 10:41         ` Catalin Marinas

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