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-rw-r--r--arch/ia64/mm/numa.c18
-rw-r--r--arch/x86_64/mm/init.c1
-rw-r--r--arch/x86_64/mm/srat.c2
-rw-r--r--drivers/acpi/acpi_memhotplug.c4
4 files changed, 25 insertions, 0 deletions
diff --git a/arch/ia64/mm/numa.c b/arch/ia64/mm/numa.c
index 64e4c21f311c..7807fc5c0422 100644
--- a/arch/ia64/mm/numa.c
+++ b/arch/ia64/mm/numa.c
@@ -16,6 +16,7 @@
#include <linux/node.h>
#include <linux/init.h>
#include <linux/bootmem.h>
+#include <linux/module.h>
#include <asm/mmzone.h>
#include <asm/numa.h>
@@ -69,4 +70,21 @@ int early_pfn_to_nid(unsigned long pfn)
return 0;
}
+
+#ifdef CONFIG_MEMORY_HOTPLUG
+/*
+ * SRAT information is stored in node_memblk[], then we can use SRAT
+ * information at memory-hot-add if necessary.
+ */
+
+int memory_add_physaddr_to_nid(u64 addr)
+{
+ int nid = paddr_to_nid(addr);
+ if (nid < 0)
+ return 0;
+ return nid;
+}
+
+EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
+#endif
#endif
diff --git a/arch/x86_64/mm/init.c b/arch/x86_64/mm/init.c
index e759109abb36..71ecbb3f3262 100644
--- a/arch/x86_64/mm/init.c
+++ b/arch/x86_64/mm/init.c
@@ -498,6 +498,7 @@ int memory_add_physaddr_to_nid(u64 start)
{
return 0;
}
+EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
#endif
#else /* CONFIG_MEMORY_HOTPLUG */
diff --git a/arch/x86_64/mm/srat.c b/arch/x86_64/mm/srat.c
index 8491300ef909..3cc0544e25f5 100644
--- a/arch/x86_64/mm/srat.c
+++ b/arch/x86_64/mm/srat.c
@@ -477,3 +477,5 @@ int memory_add_physaddr_to_nid(u64 start)
return ret;
}
+EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
+
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 1dda370f402b..98099de59b45 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -238,6 +238,10 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
num_enabled++;
continue;
}
+
+ if (node < 0)
+ node = memory_add_physaddr_to_nid(info->start_addr);
+
result = add_memory(node, info->start_addr, info->length);
if (result)
continue;