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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?Zgqkqp/aLoCIpp6HomL2OeyIwbqosOIoc5m2ADGFkSgnERwWbMkQJGwvHtM+?= =?us-ascii?Q?2HiVlvhot3qfhgcyy+0szYaAFLUpHIU45N4Sfp6yZ40YVETe0h3ZVYq6bUJg?= =?us-ascii?Q?pecA/W4wS9yROV7c1fQsyM50vr+24U6SAtJ70uebxdltqJ1dkK54u+15pI/c?= =?us-ascii?Q?f7D1uVEd2fIKG3YPQDxCWKTcXxS3p92RmdUFa7KWqJzELRVTCiUECpOppKeG?= =?us-ascii?Q?DpQ7Ofo6Vtg09yJf/oMGnG2JWT87zx3WIZM+Lr7qKRJDkBv2UeUEOLwkv/C3?= =?us-ascii?Q?aPdRbClja81Sy+G9glU3/jQHc/4vdt+24THpH+evTE0g9cThUgOMiYSijVM8?= =?us-ascii?Q?rh2L2hi2mpLQnd8JyVyhDZfDcaAPgzyRWVXcgQO48+aDxGnToNUw051VJVUx?= =?us-ascii?Q?dbImnMIJRrYy7NuzSPQkDvQJZiapOlOSZs78W0QSB04dn4jV6plxijahEnrC?= =?us-ascii?Q?iqKDlsngX91XJfIhiuM6tOtLIbFdD9tXXsEI6iXET6rOFY4IFzZ2+1waBVWw?= =?us-ascii?Q?eso5z6gxjBpYvoSo9rPkuGqKJgZjZlHubfIDSzenZQHjoXbvXNgtKDZaOsvG?= =?us-ascii?Q?sLTHplJUkqj76FAGi8zpGU5lBD8Z8tmOe40c/eyRxje9dWNAGXWz/w8veYca?= =?us-ascii?Q?s1GUQGSoyf1Vprf/6ZMX+e5VGQnuxjLhsoCRkXUwig6J1gn2iZEEDCuv4bad?= =?us-ascii?Q?mSEuQY+mCcD3YgOCwCPbtyZksYQtlnc+mEy657hcILcpGGtEA5EvOqhTQTUJ?= =?us-ascii?Q?z9qOyx9XZeLXTVQRC0IqyA+T8QqVIZbZH/x3EdJ2l9fo1T0WQJ4FVstvFTnq?= =?us-ascii?Q?6vPnRBYLwxLXicAZ0FPi44UJUvrkCVi5WIpEVe0RKbfKtX6YDME7qIEhQE70?= =?us-ascii?Q?mxxVmGKXvCdYD42U717WB5X97PvHfngAmTLsRgEXIfG8bEq40Qo5JHZmL6CE?= =?us-ascii?Q?fUPEwaifGWWUFXV1U4ktf6Vu+q9le1EJxVwt0Uidjw9O4jT+wwVCPB/vHhJZ?= =?us-ascii?Q?aanLW8npk4MhMTXd4oeu7t661SD4BaHV7L1GLGK+29H3BaHlArMR4LpXJZM8?= =?us-ascii?Q?qH9BfC49do44cwY3w30WB8L4PtvohmTa/ESUncONrOO1o/4A0npF1xoRwm63?= =?us-ascii?Q?Qdcat8y4Zv+QZEK/+nhYLxDZ3+CCVD+f2XLuChFduQgJCxvkxDVw54ETujKk?= =?us-ascii?Q?/HaKoGZonKdzAnNaZ7tR8i09JFeisHeCYYueakPdILLXxdb+f4glIyIhOFpW?= =?us-ascii?Q?RM+dmmgVAq0TuuwIXL3YzhwnD7oc8202DnrTELB3RMyLDr1IBsIv3rpzAUV6?= =?us-ascii?Q?cSkUjtEiV+QKG6qv5p7y0hgwZqfJcyu4drnqXf0+5vFtWPY7oQ7hPaNiJBu7?= =?us-ascii?Q?hP52dN5NuSd0SrD02YIlIoe+7c0Z+DBUaIN6WHXK5Qv8A9WMjDtmwL/RcPEW?= =?us-ascii?Q?2SoFr2uJQfXMbvgQA/sq9qnTqQWGUGoObTqHobqGzkR26XkFroRoAF7vUaV/?= =?us-ascii?Q?K7CpBEtgZIV8tjc3KVVquQNlUM470BDnJ9zZq/THqXATYXy+3JO1pb9EJ/zJ?= =?us-ascii?Q?7AiyR44p/x5W5L35A32fEPhErDDEy5gMRwfoZ0QWSMuKPeUhsbN6ya1232s1?= =?us-ascii?Q?pTYsYogP/kq00Fp3mxSEl7+S24Chiw4/WartXpwACKMLBbO4u17u/gtSOz/I?= =?us-ascii?Q?k4U9MEx2spioAw8EuqqFZb3z9r6eNJDVQCOWV7CykyRF/PpvDGv1UNIK1OZa?= =?us-ascii?Q?DhneMsEWOw=3D=3D?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 01db5f60-7a12-4ce3-98e8-08de4ed68e29 X-MS-Exchange-CrossTenant-AuthSource: LV8PR12MB9620.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Jan 2026 16:54:14.9175 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: e+oZV2YmNi59mPDa3QG2uY0sDs0emKWZdKMk31DQ75pZS04+LiLVId+drCRG6fkU X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB7755 On Thu, Jan 08, 2026 at 04:41:47PM +0000, Robin Murphy wrote: > The point is that if there's a coherent interconnect downstream of the SMMU > - which we infer from the SMMU's own coherency - then we should be able to > make the *output* of SMMU translation coherent, Sadly I'm aware of HW where that isn't true.. The SMMU is flexible and there are more than one fabric connection from a SW visible SMMU instance. They can have different properties. Especially if the design is focused on something like isochronous real time guarentees. Jason