forked from Minki/linux
drm/amdkfd: Limit queue number per process and device to 127
HWS uses bit 7 in the queue number of the map process packet for an undocumented feature. Therefore the queue number per process and device must be 127 or less. Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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@ -150,6 +150,7 @@ int pqm_create_queue(struct process_queue_manager *pqm,
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struct process_queue_node *pqn;
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struct kernel_queue *kq;
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enum kfd_queue_type type = properties->type;
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unsigned int max_queues = 127; /* HWS limit */
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q = NULL;
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kq = NULL;
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@ -166,10 +167,11 @@ int pqm_create_queue(struct process_queue_manager *pqm,
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* If we are just about to create DIQ, the is_debug flag is not set yet
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* Hence we also check the type as well
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*/
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if ((pdd->qpd.is_debug) || (type == KFD_QUEUE_TYPE_DIQ)) {
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if (pdd->qpd.queue_count >= dev->device_info->max_no_of_hqd/2)
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return -ENOSPC;
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}
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if ((pdd->qpd.is_debug) || (type == KFD_QUEUE_TYPE_DIQ))
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max_queues = dev->device_info->max_no_of_hqd/2;
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if (pdd->qpd.queue_count >= max_queues)
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return -ENOSPC;
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retval = find_available_queue_slot(pqm, qid);
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if (retval != 0)
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