From: Kefeng Wang <wangkefeng.wang@huawei.com>
To: Mike Rapoport <rppt@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>,
Ard Biesheuvel <ardb@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
"David Hildenbrand" <david@redhat.com>,
Marc Zyngier <maz@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Mike Rapoport <rppt@linux.ibm.com>, Will Deacon <will@kernel.org>,
<kvmarm@lists.cs.columbia.edu>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-mm@kvack.org>
Subject: Re: [PATCH v4 0/4] arm64: drop pfn_valid_within() and simplify pfn_valid()
Date: Wed, 12 May 2021 11:13:28 +0800 [thread overview]
Message-ID: <b4b384c1-0d45-bb7f-3bd4-56cdb15ff2f8@huawei.com> (raw)
In-Reply-To: <20210511100550.28178-1-rppt@kernel.org>
On 2021/5/11 18:05, Mike Rapoport wrote:
> From: Mike Rapoport <rppt@linux.ibm.com>
>
> Hi,
>
> These patches aim to remove CONFIG_HOLES_IN_ZONE and essentially hardwire
> pfn_valid_within() to 1.
>
> The idea is to mark NOMAP pages as reserved in the memory map and restore
> the intended semantics of pfn_valid() to designate availability of struct
> page for a pfn.
>
> With this the core mm will be able to cope with the fact that it cannot use
> NOMAP pages and the holes created by NOMAP ranges within MAX_ORDER blocks
> will be treated correctly even without the need for pfn_valid_within.
>
> The patches are boot tested on qemu-system-aarch64.
>
> I beleive it would be best to route these via mmotm tree.
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
next prev parent reply other threads:[~2021-05-12 3:13 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-11 10:05 [PATCH v4 0/4] arm64: drop pfn_valid_within() and simplify pfn_valid() Mike Rapoport
2021-05-11 10:05 ` [PATCH v4 1/4] include/linux/mmzone.h: add documentation for pfn_valid() Mike Rapoport
2021-05-11 10:22 ` Ard Biesheuvel
2021-05-11 10:05 ` [PATCH v4 2/4] memblock: update initialization of reserved pages Mike Rapoport
2021-05-11 10:23 ` Ard Biesheuvel
2021-05-11 10:05 ` [PATCH v4 3/4] arm64: decouple check whether pfn is in linear map from pfn_valid() Mike Rapoport
2021-05-11 10:25 ` Ard Biesheuvel
2021-05-11 10:05 ` [PATCH v4 4/4] arm64: drop pfn_valid_within() and simplify pfn_valid() Mike Rapoport
2021-05-11 10:26 ` Ard Biesheuvel
2021-05-11 23:40 ` Andrew Morton
2021-05-12 5:31 ` Mike Rapoport
2021-05-12 3:13 ` Kefeng Wang [this message]
2021-05-12 7:00 ` [PATCH v4 0/4] " Ard Biesheuvel
2021-05-12 7:33 ` Mike Rapoport
2021-05-12 7:59 ` Ard Biesheuvel
2021-05-12 8:32 ` Mike Rapoport
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