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b=dxKzc6mjgpEI/gtpOZyuQeLjQvddHurnQsGDoMpXnjknrfY2hKAiYfqUmgA557koH e7jmaCP+YJaAZRcy5orhOkgHcEFid9SLfIXq5prOVlqYQVEZZwtmz9vUtd5273iQxI UKxAfeO0bjeO9WLaog9V0U61zMaIpiIZ7UeSyqBH9eym1B0XA4KlbnQtdJ0bW7qW6B Z1EHYFW28+7LtXyj9olREmKA7WH/g4bDfXZqlXZTqiELFDFk2194EltzQCAk3l7bUi BrmfDnlOnDQgNxM40UatpYAMCFdANbrAM6XbiFTbSkp5ZSQsr91noJlmtNvMpPf0XO IQZ1KqUo2KWEA== Date: Thu, 5 Nov 2026 14:57:02 +0200 From: Mike Rapoport To: George Guo Cc: pasha.tatashin@soleen.com, pratyush@kernel.org, chenhuacai@kernel.org, ardb@kernel.org, shuah@kernel.org, ilias.apalodimas@linaro.org, akpm@linux-foundation.org, baoquan.he@linux.dev, ruirui.yang@linux.dev, guodongtai@kylinos.cn, kernel@xen0n.name, graf@amazon.com, liukexin@kylinos.cn, loongarch@lists.linux.dev, linux-kernel@vger.kernel.org, kexec@lists.infradead.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-efi@vger.kernel.org Subject: Re: [PATCH v6 5/8] LoongArch: Allow memblock arrays to resize Message-ID: References: <20261029172956.20791-1-dongtai.guo@linux.dev> <20261029172956.20791-6-dongtai.guo@linux.dev> X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261029172956.20791-6-dongtai.guo@linux.dev> X-Spam-Status: No, score=-5.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS autolearn=no autolearn_force=no version=4.0.1 X-Rspamd-Server: rspam09 X-Stat-Signature: 8zsi46hufrfgbkdr16gwqfifsxbxjcmg X-Rspamd-Queue-Id: DBD4440007 X-Rspam-User: X-HE-Tag: 1793883432-10735 X-HE-Meta: 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 +82sz6AO agBjthAWh05n8Az95rrpXVQAJeliVRCkX591WoayZ38PTw9DL1xUV4PhBxKOBJjydkHXyQyRBooGG1T+GX2ynxCSd7b19wYs+lQ825gtNKjNyxuz2WETQagCdUkR/MR/jom2V0V2rz9m8yoGkLov13QhjOgCoprQ2LaKhXDfMTonv+J2I5NO74yGTEsb4OSiGlIsAK6/H04iDQZBE8ztmUE1ckIilQ2fcmpsPUr1GKc6bFkSw6TnB4e5m3DRYTA9Ww0yr Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Fri, Oct 30, 2026 at 02:29:52AM +0900, George Guo wrote: > From: George Guo > > LoongArch never calls memblock_allow_resize(), so the reserved region > array cannot grow beyond INIT_MEMBLOCK_RESERVED_REGIONS entries > (INIT_MEMBLOCK_REGIONS + NR_CPUS). This might be something to fix independent of KHO. Huacai, What's the reason LoongArch never enables memblock resizing and why it defines INIT_MEMBLOCK_RESERVED_REGIONS to include NR_CPUS? -- Sincerely yours, Mike.