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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko Subject: [PATCH 03/14] mm/Kconfig: make CONFIG_MEMORY_HOTPLUG depend on CONFIG_SPARSEMEM_VMEMMAP Date: Tue, 17 Mar 2026 17:56:41 +0100 Message-ID: <20260317165652.99114-4-david@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260317165652.99114-1-david@kernel.org> References: <20260317165652.99114-1-david@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 43A7F140007 X-Stat-Signature: skm87zmt6wchk154ogm8it5s5e8oz957 X-Rspam-User: X-Rspamd-Server: rspam06 X-HE-Tag: 1773766634-87381 X-HE-Meta: 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 rPsnIt72 XgCqCAvayHVtaTKZR0SA4v8BkzZrVkure6f3vm04fxQPyHvnLwK7JkmcnV22o5XlgzJ0h/ePuH+XWbnRNb+VsWQKsymQeQ62uthr+vujJjliEQCeVnmdXJUJn6ctM/ST8CpSek7Zu1LL5pHdKULjRv2C3L3lZNcAGu7Fw40t6YfbAghd7xP7QkJxXZXnegvZWCI2U/e+vUVcfspboA5ySPuIPWtBrg5GKrnEEwbnpBYVFSHTQEmoVABfGc+WKISj4E9pTUlZTlo1UaKgjysQBixNzBQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Ever since commit f8f03eb5f0f9 ("mm: stop making SPARSEMEM_VMEMMAP user-selectable"), an architecture that supports CONFIG_SPARSEMEM_VMEMMAP (by selecting SPARSEMEM_VMEMMAP_ENABLE) can no longer enable CONFIG_SPARSEMEM without CONFIG_SPARSEMEM_VMEMMAP. Right now, CONFIG_MEMORY_HOTPLUG is guarded by CONFIG_SPARSEMEM. However, CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG is only enabled by * arm64: which selects SPARSEMEM_VMEMMAP_ENABLE * loongarch: which selects SPARSEMEM_VMEMMAP_ENABLE * powerpc (64bit): which selects SPARSEMEM_VMEMMAP_ENABLE * riscv (64bit): which selects SPARSEMEM_VMEMMAP_ENABLE * s390 with SPARSEMEM: which selects SPARSEMEM_VMEMMAP_ENABLE * x86 (64bit): which selects SPARSEMEM_VMEMMAP_ENABLE So, we can make CONFIG_MEMORY_HOTPLUG depend on CONFIG_SPARSEMEM_VMEMMAP without affecting any setups. Signed-off-by: David Hildenbrand (Arm) --- mm/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/Kconfig b/mm/Kconfig index ebd8ea353687..c012944938a7 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -472,7 +472,7 @@ config ARCH_ENABLE_MEMORY_HOTREMOVE menuconfig MEMORY_HOTPLUG bool "Memory hotplug" select MEMORY_ISOLATION - depends on SPARSEMEM + depends on SPARSEMEM_VMEMMAP depends on ARCH_ENABLE_MEMORY_HOTPLUG depends on 64BIT select NUMA_KEEP_MEMINFO if NUMA -- 2.43.0