drivers/iommu/io-pgfault.c

3  * Handle device page faults
46 	list_for_each_entry_safe(iopf, next, &group->faults, list) {  in __iopf_free_group()
99 	INIT_LIST_HEAD(&group->faults);  in iopf_group_alloc()
101 	list_add(&group->last_fault.list, &group->faults);  in iopf_group_alloc()
103 	/* See if we have partial faults for this group */  in iopf_group_alloc()
108 			list_move(&iopf->list, &group->faults);  in iopf_group_alloc()
110 	list_add(&group->pending_node, &iopf_param->faults);  in iopf_group_alloc()
113 	group->fault_count = list_count_nodes(&group->faults);  in iopf_group_alloc()
134 			 * managed PASID table. Therefore page faults for  in find_fault_handler()
181  * them before reporting faults. A PASID Stop Marker (LRW = 0b100) doesn't
201  * request completes, outstanding faults will have been dealt with by the time
207  * freed after the device has stopped generating page faults (or the iommu
208  * hardware has been set to block the page faults) and the pending page faults
250 	 * leaving, otherwise partial faults will be stuck.  in iommu_report_device_fault()
287  * iopf_queue_flush_dev - Ensure that all queued faults have been processed
288  * @dev: the endpoint whose faults need to be flushed.
291  * pending faults for this PASID have been handled, and won't hit the address
318  * iopf_group_response - Respond a group of page faults
319  * @group: the group of faults with the same group id
347  * @queue: the queue whose partial faults need to be discarded
349  * When the hardware queue overflows, last page faults in a group may have been
350  * lost and the IOMMU driver calls this to discard all partial faults. The
351  * driver shouldn't be adding new faults to this queue concurrently.
410 	INIT_LIST_HEAD(&fault_param->faults);  in iopf_queue_add_device()
471 	list_for_each_entry_safe(group, temp, &fault_param->faults, pending_node) {  in iopf_queue_remove_device()
510 	 * The WQ is unordered because the low-level handler enqueues faults by  in iopf_queue_alloc()
532  * Counterpart to iopf_queue_alloc(). The driver must not be queuing faults or