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[85.23.51.1]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-38c838daa4bsm16330071fa.32.2026.03.30.04.56.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Mar 2026 04:56:42 -0700 (PDT) From: mpenttil@redhat.com To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, =?UTF-8?q?Mika=20Penttil=C3=A4?= , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko Subject: [PATCH v7 1/6] mm:/Kconfig changes for migrate on fault for device pages Date: Mon, 30 Mar 2026 14:56:06 +0300 Message-ID: <20260330115611.347988-2-mpenttil@redhat.com> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20260330115611.347988-1-mpenttil@redhat.com> References: <20260330115611.347988-1-mpenttil@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: rpZy6yn5E1m2zkFcRDkHvkjSyWlIF8xqYKwcTC6gPY4_1774871805 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: C993C40009 X-Stat-Signature: o9qjufmr5w9qtpwgmb3ne4jptd85i8g6 X-Rspam-User: X-HE-Tag: 1774871807-453014 X-HE-Meta: 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 eGnddR7k 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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 With the unified HMM/migrate_device page table walk migrate_device needs HMM enabled and HMM needs MMU notifiers. 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