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Diffstat (limited to 'arch/powerpc/mm/pgtable_32.c')
-rw-r--r--arch/powerpc/mm/pgtable_32.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index b55bbe87acb8..177e4038b43c 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -26,6 +26,7 @@
#include <linux/vmalloc.h>
#include <linux/init.h>
#include <linux/highmem.h>
+#include <linux/lmb.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
@@ -191,7 +192,8 @@ __ioremap_caller(phys_addr_t addr, unsigned long size, unsigned long flags,
* Don't allow anybody to remap normal RAM that we're using.
* mem_init() sets high_memory so only do the check after that.
*/
- if (mem_init_done && (p < virt_to_phys(high_memory))) {
+ if (mem_init_done && (p < virt_to_phys(high_memory)) &&
+ !(__allow_ioremap_reserved && lmb_is_region_reserved(p, size))) {
printk("__ioremap(): phys addr 0x%llx is RAM lr %p\n",
(unsigned long long)p, __builtin_return_address(0));
return NULL;