summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/mm/mem.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/mm/mem.c')
-rw-r--r--arch/powerpc/mm/mem.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 16da595ff40..2dd6bdd31fe 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -34,6 +34,7 @@
#include <linux/suspend.h>
#include <linux/memblock.h>
#include <linux/hugetlb.h>
+#include <linux/slab.h>
#include <asm/pgalloc.h>
#include <asm/prom.h>
@@ -555,3 +556,32 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,
book3e_hugetlb_preload(vma->vm_mm, address, *ptep);
#endif
}
+
+/*
+ * System memory should not be in /proc/iomem but various tools expect it
+ * (eg kdump).
+ */
+static int add_system_ram_resources(void)
+{
+ struct memblock_region *reg;
+
+ for_each_memblock(memory, reg) {
+ struct resource *res;
+ unsigned long base = reg->base;
+ unsigned long size = reg->size;
+
+ res = kzalloc(sizeof(struct resource), GFP_KERNEL);
+ WARN_ON(!res);
+
+ if (res) {
+ res->name = "System RAM";
+ res->start = base;
+ res->end = base + size - 1;
+ res->flags = IORESOURCE_MEM;
+ WARN_ON(request_resource(&iomem_resource, res) < 0);
+ }
+ }
+
+ return 0;
+}
+subsys_initcall(add_system_ram_resources);