mem: workaround - always use 1st virtual memory region

This PR forces buffers location in the very first memory region,
preventing from conflict of  virtual addresses with loadable modules
in case of 5 cores platforms

Signed-off-by: Marcin Szkudlinski <marcin.szkudlinski@intel.com>

Author: marcinszkudlinski

zephyr/lib/regions_mm.c

@@ -49,10 +49,7 @@ struct vmh_heap {
  */
 struct vmh_heap *vmh_init_heap(const struct vmh_heap_config *cfg, bool allocating_continuously)
 {
-	const struct sys_mm_drv_region *virtual_memory_regions =
-		sys_mm_drv_query_memory_regions();
 	int i;
-
 	struct vmh_heap *new_heap =
 		rzalloc(SOF_MEM_FLAG_KERNEL | SOF_MEM_FLAG_COHERENT, sizeof(*new_heap));
 
@@ -61,15 +58,14 @@ struct vmh_heap *vmh_init_heap(const struct vmh_heap_config *cfg, bool allocatin
 
 	k_mutex_init(&new_heap->lock);
 	struct vmh_heap_config new_config = {0};
-	const struct sys_mm_drv_region *region;
 
-	SYS_MM_DRV_MEMORY_REGION_FOREACH(virtual_memory_regions, region) {
-		if (region->attr == MEM_REG_ATTR_SHARED_HEAP) {
-			new_heap->virtual_region = region;
-			break;
-		}
-	}
-	if (!new_heap->virtual_region)
+	/* Workaround - use the very first virtual memory region because of virt addresses
+	 * collision.
+	 * Fix will be provided ASAP, but removing MEM_REG_ATTR_SHARED_HEAP from SOF is required
+	 * to merge Zephyr changes
+	 */
+	new_heap->virtual_region = sys_mm_drv_query_memory_regions();
+	if (!new_heap->virtual_region || !new_heap->virtual_region->size)
 		goto fail;
 
 	/* If no config was specified we will use default one */