start = phys_start_pfn << PAGE_SHIFT;
size = nr_pages * PAGE_SIZE;
- ret = release_mem_region_adjustable(&iomem_resource, start, size);
+
+ /* in the ZONE_DEVICE case device driver owns the memory region */
+ if (!is_dev_zone(zone))
+ ret = release_mem_region_adjustable(&iomem_resource, start, size);
if (ret) {
resource_size_t endres = start + size - 1;
return 0;
}
-int zone_for_memory(int nid, u64 start, u64 size, int zone_default)
+int zone_for_memory(int nid, u64 start, u64 size, int zone_default,
+ bool for_device)
{
+#ifdef CONFIG_ZONE_DEVICE
+ if (for_device)
+ return ZONE_DEVICE;
+#endif
if (should_add_memory_movable(nid, start, size))
return ZONE_MOVABLE;
}
/* call arch's memory hotadd */
- ret = arch_add_memory(nid, start, size);
+ ret = arch_add_memory(nid, start, size, false);
if (ret < 0)
goto error;