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Sun, 28 Dec 2025 17:25:54 -0800 (PST) MIME-Version: 1.0 References: <20251228124001.3624742-1-rppt@kernel.org> <20251228124001.3624742-6-rppt@kernel.org> In-Reply-To: <20251228124001.3624742-6-rppt@kernel.org> From: Guo Ren Date: Mon, 29 Dec 2025 09:25:42 +0800 X-Gmail-Original-Message-ID: X-Gm-Features: AQt7F2ovPXIqQiKDAgz2Iigjc3UdRKj7ty_Tsln8fN_MKzmJJ5LWRy6ejtLdRVA Message-ID: Subject: Re: [PATCH 05/28] csky: introduce arch_zone_limits_init() To: Mike Rapoport Cc: Andrew Morton , Alex Shi , Alexander Gordeev , Andreas Larsson , Borislav Petkov , Brian Cain , "Christophe Leroy (CS GROUP)" , Catalin Marinas , "David S. Miller" , Dave Hansen , David Hildenbrand , Dinh Nguyen , Geert Uytterhoeven , Heiko Carstens , Helge Deller , Huacai Chen , Ingo Molnar , Johannes Berg , John Paul Adrian Glaubitz , Jonathan Corbet , "Liam R. Howlett" , Lorenzo Stoakes , Magnus Lindholm , Matt Turner , Max Filippov , Michael Ellerman , Michal Hocko , Michal Simek , Muchun Song , Oscar Salvador , Palmer Dabbelt , Pratyush Yadav , Richard Weinberger , Russell King , Stafford Horne , Suren Baghdasaryan , Thomas Bogendoerfer , Thomas Gleixner , Vasily Gorbik , Vineet Gupta , Vlastimil Babka , Will Deacon , x86@kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-cxl@vger.kernel.org, linux-doc@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-um@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, sparclinux@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: E4C74100007 X-Stat-Signature: kq6sxnoho58wb7roid7wwnt86sjsi67k X-HE-Tag: 1766971557-19575 X-HE-Meta: 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 gJct75/c URe9yGKAMvgHTYdGP/LSaGXq1vekPyAReiEeD8Mv86V4wfCpG9rJBVHhPSdEn0i1+fZwP05+jKDhbaA0D3XQWDa6jrz3E5C0dIh9syfkQW84a/wjden3WdusjkogT2W4/aQyUU6AD03sbtQRUCQc6ugE97epBMH/83ERvN+4+Cj+L9yN/FOv+T/hh/b4bT1MlGav66V4Tq/srTdDUKZ43D46yon+k5Z+IuEi8/0mQ7Db1Gyab+H63Q+IyUybi+GWtP2A0vDfhOLiiPQ7ychvCOvgYH0QscYyzW7ot+aMQwUQ5kGmzr5AWLBqYHyoTy5K9GoUrfgZ6gZtNt2lxss2E7fwiy8qGz8p5wPuU X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Sun, Dec 28, 2025 at 8:41=E2=80=AFPM Mike Rapoport wro= te: > > From: "Mike Rapoport (Microsoft)" > > Move calculations of zone limits to a dedicated arch_zone_limits_init() > function. > > Later MM core will use this function as an architecture specific callback > during nodes and zones initialization and thus there won't be a need to > call free_area_init() from every architecture. > > Signed-off-by: Mike Rapoport (Microsoft) > --- > arch/csky/kernel/setup.c | 12 +++++++++--- > 1 file changed, 9 insertions(+), 3 deletions(-) > > diff --git a/arch/csky/kernel/setup.c b/arch/csky/kernel/setup.c > index e0d6ca86ea8c..8968815d93e6 100644 > --- a/arch/csky/kernel/setup.c > +++ b/arch/csky/kernel/setup.c > @@ -51,6 +51,14 @@ static void __init setup_initrd(void) > } > #endif > > +void __init arch_zone_limits_init(unsigned long *max_zone_pfns) > +{ > + max_zone_pfns[ZONE_NORMAL] =3D max_low_pfn; > +#ifdef CONFIG_HIGHMEM > + max_zone_pfns[ZONE_HIGHMEM] =3D max_pfn; > +#endif > +} > + LGTM! Acked-by: Guo Ren > static void __init csky_memblock_init(void) > { > unsigned long lowmem_size =3D PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET= _OFFSET); > @@ -83,12 +91,9 @@ static void __init csky_memblock_init(void) > setup_initrd(); > #endif > > - max_zone_pfn[ZONE_NORMAL] =3D max_low_pfn; > - > mmu_init(min_low_pfn, max_low_pfn); > > #ifdef CONFIG_HIGHMEM > - max_zone_pfn[ZONE_HIGHMEM] =3D max_pfn; > > highstart_pfn =3D max_low_pfn; > highend_pfn =3D max_pfn; > @@ -97,6 +102,7 @@ static void __init csky_memblock_init(void) > > dma_contiguous_reserve(0); > > + arch_zone_limits_init(max_zone_pfn); > free_area_init(max_zone_pfn); > } > > -- > 2.51.0 > --=20 Best Regards Guo Ren