GUC_MAX_CONTEXT_ID
#define GUC_INVALID_CONTEXT_ID GUC_MAX_CONTEXT_ID
guc->submission_state.num_guc_ids = GUC_MAX_CONTEXT_ID;
if (unlikely(ctx_id >= GUC_MAX_CONTEXT_ID)) {
GEM_BUG_ON(id >= GUC_MAX_CONTEXT_ID);
GEM_BUG_ON(index >= GUC_MAX_CONTEXT_ID);
GUC_MAX_CONTEXT_ID);
ce = kcalloc(GUC_MAX_CONTEXT_ID, sizeof(*ce), GFP_KERNEL);