| 56 | } |
| 57 | |
| 58 | static void on_shm_page_fault(struct rt_varea *varea, struct rt_aspace_fault_msg *msg) |
| 59 | { |
| 60 | struct lwp_shm_struct *shm; |
| 61 | int err; |
| 62 | shm = rt_container_of(varea->mem_obj, struct lwp_shm_struct, mem_obj); |
| 63 | |
| 64 | /* map all share page frames to user space in a time */ |
| 65 | void *page = (void *)shm->addr; |
| 66 | void *pg_paddr = (char *)page + PV_OFFSET; |
| 67 | err = rt_varea_map_range(varea, varea->start, pg_paddr, shm->size); |
| 68 | |
| 69 | if (err == RT_EOK) |
| 70 | { |
| 71 | msg->response.status = MM_FAULT_STATUS_OK_MAPPED; |
| 72 | msg->response.size = shm->size; |
| 73 | msg->response.vaddr = page; |
| 74 | } |
| 75 | |
| 76 | return ; |
| 77 | } |
| 78 | |
| 79 | /* |
| 80 | * Try to allocate an structure 'lwp_shm_struct' from the freed list or the |
nothing calls this directly
no test coverage detected