Arm® System Memory Management Unit Architecture Specification

Arm® System Memory Management Unit Architecture Specification Release information Date Version Changes 2026/Mar/06 H.a • Update with SMMUv3.5 architecture • Amendments and clarifications 2025/Apr/30 G.b • Update with additions to SMMU for RME DA architecture • Amendments and clarifications 2024/Aug/15 G.a • Update with SMMUv3.4 architecture • Amendments and clarifications 2024/Feb/22 F.b • Amendments and clarifications 2023/Sep/12 F.a • Update with SMMU for RME DA architecture • Amendments and clarifications 2023/Jan/31 E.a • Update with SMMU for RME architecture • Amendments and clarifications 2021/Apr/30 D.b • Amendments and clarifications 2020/Aug/31 D.a • Update with SMMUv3.3 architecture • Amendments and clarifications 2019/Jul/18 C.a • Amendments and clarifications 2018/Mar/16 C • Update with SMMUv3.2 architecture • Further amendments and clarifications 2017/Jun/15 B • Amendments and clarifications 2016/Oct/15 A • First release ARM IHI 0070 H.a Copyright © 2016-2026 Arm Limited or its affiliates. All rights reserved. Non-confidential ii