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Diffstat (limited to 'mm/memory_hotplug.c')
-rw-r--r--mm/memory_hotplug.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 8fd97dac538a..aa992e2df58a 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -778,7 +778,10 @@ int __remove_pages(struct zone *zone, unsigned long phys_start_pfn,
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;
@@ -1215,8 +1218,13 @@ static int should_add_memory_movable(int nid, u64 start, u64 size)
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;
@@ -1265,7 +1273,7 @@ int __ref add_memory(int nid, u64 start, u64 size)
}
/* 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;