A second-level user mode trap handler can be installed. The CWSR trap handler jumps to the secondary trap handler conditionally for any conditions not handled by it. This can be used e.g. for debugging or catching math exceptions. When CWSR is disabled, the user mode trap handler is installed as first level trap handler.
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| @@ -262,6 +262,13 @@ struct kfd_ioctl_get_tile_config_args { · 261 unmodified lines | ||
| 262 | 262 | */ |
| 263 | 263 | }; |
| 264 | 264 | |
| 265 | +struct kfd_ioctl_set_trap_handler_args { | |
| 266 | + uint64_t tba_addr; /* to KFD */ | |
| 267 | + uint64_t tma_addr; /* to KFD */ | |
| 268 | + uint32_t gpu_id; /* to KFD */ | |
| 269 | + uint32_t pad; | |
| 270 | +}; | |
| 271 | + | |
| 265 | 272 | #define AMDKFD_IOCTL_BASE 'K' |
| 266 | 273 | #define AMDKFD_IO(nr) _IO(AMDKFD_IOCTL_BASE, nr) |
| 267 | 274 | #define AMDKFD_IOR(nr, type) _IOR(AMDKFD_IOCTL_BASE, nr, type) |
| @@ -322,7 +329,10 @@ struct kfd_ioctl_get_tile_config_args { · 54 unmodified lines | ||
| 322 | 329 | #define AMDKFD_IOC_GET_TILE_CONFIG \ |
| 323 | 330 | AMDKFD_IOWR(0x12, struct kfd_ioctl_get_tile_config_args) |
| 324 | 331 | |
| 332 | +#define AMDKFD_IOC_SET_TRAP_HANDLER \ | |
| 333 | + AMDKFD_IOW(0x13, struct kfd_ioctl_set_trap_handler_args) | |
| 334 | + | |
| 325 | 335 | #define AMDKFD_COMMAND_START 0x01 |
| 326 | −#define AMDKFD_COMMAND_END 0x13 | |
| 336 | +#define AMDKFD_COMMAND_END 0x14 | |
| 327 | 337 | |
| 328 | 338 | #endif |