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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko Subject: [PATCH v8 1/5] mm/Kconfig: changes for migrate on fault for device pages Date: Tue, 14 Apr 2026 07:12:22 +0300 Message-ID: <20260414041226.1539439-2-mpenttil@redhat.com> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20260414041226.1539439-1-mpenttil@redhat.com> References: <20260414041226.1539439-1-mpenttil@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: JadPtS5_j2fMgLVs4wriWjRyLl9p-i_X04RIgi6IpQ8_1776139978 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 6DF9410000F X-Stat-Signature: bx751tcpzizuh3xtksa5iuenqp8d9cpw X-HE-Tag: 1776139982-810492 X-HE-Meta: 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 urEdDynC 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Mika Penttilä HMM depends on MMU notifiers. With the unified HMM/migrate_device page table walk migrate_device needs HMM enabled. Enable them explicitly to avoid breaking random configs. Cc: Andrew Morton Cc: David Hildenbrand Cc: Lorenzo Stoakes Cc: "Liam R. Howlett" Cc: Vlastimil Babka Cc: Mike Rapoport Cc: Suren Baghdasaryan Cc: Michal Hocko Signed-off-by: Mika Penttilä Acked-by: David Hildenbrand (Arm) --- mm/Kconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/Kconfig b/mm/Kconfig index ebd8ea353687..583d92bba2e8 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -647,6 +647,7 @@ config MIGRATION config DEVICE_MIGRATION def_bool MIGRATION && ZONE_DEVICE + select HMM_MIRROR config ARCH_ENABLE_HUGEPAGE_MIGRATION bool @@ -1222,6 +1223,7 @@ config ZONE_DEVICE config HMM_MIRROR bool depends on MMU + select MMU_NOTIFIER config GET_FREE_REGION bool -- 2.50.0