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-rw-r--r--include/asm-sparc64/pgtable.h5
-rw-r--r--include/asm-sparc64/processor.h2
2 files changed, 6 insertions, 1 deletions
diff --git a/include/asm-sparc64/pgtable.h b/include/asm-sparc64/pgtable.h
index d427ce64921..ed4124edf83 100644
--- a/include/asm-sparc64/pgtable.h
+++ b/include/asm-sparc64/pgtable.h
@@ -752,8 +752,11 @@ extern int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
#include <asm-generic/pgtable.h>
-/* We provide our own get_unmapped_area to cope with VA holes for userland */
+/* We provide our own get_unmapped_area to cope with VA holes and
+ * SHM area cache aliasing for userland.
+ */
#define HAVE_ARCH_UNMAPPED_AREA
+#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
/* We provide a special get_unmapped_area for framebuffer mmaps to try and use
* the largest alignment possible such that larget PTEs can be used.
diff --git a/include/asm-sparc64/processor.h b/include/asm-sparc64/processor.h
index 685479fb436..c6896b88283 100644
--- a/include/asm-sparc64/processor.h
+++ b/include/asm-sparc64/processor.h
@@ -217,6 +217,8 @@ static inline void prefetchw(const void *x)
#define spin_lock_prefetch(x) prefetchw(x)
+#define HAVE_ARCH_PICK_MMAP_LAYOUT
+
#endif /* !(__ASSEMBLY__) */
#endif /* !(__ASM_SPARC64_PROCESSOR_H) */