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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?Yj6sNXWNf3vFrdietyt2t7CCR8R45j5oj2vKD7ofVjvcByei/MhUfSrOzzfV?= =?us-ascii?Q?QHz6wr5ddpaBmj703Pd5a+IsKmf3B8w2FarYsncjBXn7lHSiMk1QYVkD6RRm?= =?us-ascii?Q?brZ2Ib5J8SP30KjeNszxgQVII6VwRUeEVVEqEFH4RItQYF9W55xJwdoVOrKn?= =?us-ascii?Q?hHR+Mn1d6bB9LVg/r3seP4vxCL6TkAY/RbFlN4/SF0Je+mqObFMDayuz1d1i?= =?us-ascii?Q?rnWUDLGh4xeyk8+AAIcI1fGz6XhABXV59mnBMjSkStGAh3WNUpqcXdRFDkbn?= =?us-ascii?Q?76oCyZftjwgj7bEtHTRT3sUXu8oixecPpq3RsGcmR08qf8GfHxdNchDMSA8N?= =?us-ascii?Q?8EAK5RPL34vma+jSA6ITH9L4DfuxsZogtB9tfn3/ylDRH7KVVMqL7bJV3zMV?= =?us-ascii?Q?77J7PGpvIurcb8tHWI2jz2t/ywvxv32OxI8m7bZUK/nq66Qmq5MDW9JSKF0m?= =?us-ascii?Q?Mjy8Rw1xtJJRKwiuBCZ5LpGX6yZbrJviqbvVRVqmj7OkK/BJE8jbvDUYg/uZ?= =?us-ascii?Q?5xv3IbDVKbBWxb/Q58WfERLC8bSGiH7+8YJcBEmcdVae9+8+XDw9d2wAxIFS?= =?us-ascii?Q?RozhbtBkf7qJopqIHb8emKEDTOQtbYOsqLIRrX3bgwh2D5jMxOR5s2GkGpKx?= =?us-ascii?Q?8WaQwiLY3B8JuxTLkBqukwAz9Oar0CUNzf8LyfPD2Ui4S3CcCUasoOxgwEhm?= =?us-ascii?Q?jojESWh6GZFr/YIGLpG0dt5fkK51Dp+OFNI9FdHjYTIs3WOTzm0MnZcHaqpG?= =?us-ascii?Q?bqiqTXKOuGo35maLNchAybrmZSdjMh2wmLS/eaykNx9GfuPM89wKq31cDbYQ?= =?us-ascii?Q?aJ28ncKj3zBX2OTDZQcVRdzWs4Ak9478iqRqjAVwSoPEW8+bwTM13kWotULc?= =?us-ascii?Q?feEnvEQ6K6Ue695MHUu+j2n/dF/02VtNu3fkwpTxabpowD+6jcbmQ/h1AiF5?= =?us-ascii?Q?mV9ChPdcP/sdqhEAbBsaEaR67C74e+B/CODj5sDCbTo2AQgWthHb7OREeBK3?= =?us-ascii?Q?bYHo/GdfsE9cdZvPYsGyrDkwhW5sNGTZN4XtzE1rXnpG6Jq2ovJtBIfRVExv?= =?us-ascii?Q?bMZ5HqsgabY4BXk/uRtU1gm3FHiyWQPUWGhfYgj9T93tX2pNqIUArSigmG6R?= =?us-ascii?Q?aJvak6fWJgIbFbzHHQ8OspZWAR7qhZS+fpVKxnBNUmAHibqWUhb8TQxufvkk?= =?us-ascii?Q?4TJiHpJ/vkrCzDjKlL/QwZ2/hwx0XBWDUAx+/vzrCISTmj9KmuIIjJyV7M3C?= =?us-ascii?Q?FfCB4cUZ0xq/eAWBSSvRQTHUp/JRjpvBrLgkmaaKeGtcX6B0NyPRz6m+garx?= =?us-ascii?Q?xOpuCndo6WGo93UNLjb7HMiagot2KzS4ltPdQeMmTUXkRksnNCuEan2kNjU7?= =?us-ascii?Q?b3fAPSXuXUv/+8FEv73FuUnZxSa4mcYFZPBtrnec+F/VbAIdRjtK5WcRRKCf?= =?us-ascii?Q?Js9mlIqN4lRROWkSP9v0TE6m3UaeioCtqtCWpnseyyIaxhrISwdITgaSKmeI?= =?us-ascii?Q?ErkLWFntdUA/aQctce0jorf8ZJ3l+RcBWuRTjSyfrR8mWtAaI6xQKfs85YZk?= =?us-ascii?Q?PbcoKGJa+c+EXpbth5vVp6OHulGLMmYYuDfbm/Sv?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: e6f76a51-f549-4ffe-bffb-08dcccf9859d X-MS-Exchange-CrossTenant-AuthSource: CH3PR12MB7763.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Sep 2024 15:52:04.2230 (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: Ly6aetKEkrI4O5NhZUJFCTWLkmv+thhf9cEnj72Van7YCbx/y+uSVr57aN//24Wz X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB6769 On Thu, Aug 29, 2024 at 12:21:39PM -0700, Jiaqi Yan wrote: > I think we still want to attempt to SIGBUS userspace, regardless of > doing unmap_mapping_range or not. IMHO we need to eliminate this path if we actually want to keep things mapped. There is no way to generate the SIGBUS without poking a 4k hole in the 1G page, as only that 4k should get SIGBUS, every other byte of the 1G is clean. Jason