[PATCH] sparc: convert IO remapping to VM_PFNMAP

Here are the Sparc bits.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 14 insertions, 1 deletions

diff --git a/arch/sparc64/mm/generic.c b/arch/sparc64/mm/generic.c
index 8fd4cb1f050a..d9396c1721cd 100644
--- a/arch/sparc64/mm/generic.c
+++ b/arch/sparc64/mm/generic.c
@@ -15,6 +15,15 @@
 #include <asm/page.h>
 #include <asm/tlbflush.h>
 
+static inline pte_t mk_pte_io(unsigned long page, pgprot_t prot, int space)
+{
+        pte_t pte;
+        pte_val(pte) = (((page) | pgprot_val(prot) | _PAGE_E) &
+                        ~(unsigned long)_PAGE_CACHE);
+        pte_val(pte) |= (((unsigned long)space) << 32);
+        return pte;
+}
+
 /* Remap IO memory, the same way as remap_pfn_range(), but use
  * the obio memory space.
  *
@@ -126,9 +135,13 @@ int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
         struct mm_struct *mm = vma->vm_mm;
         int space = GET_IOSPACE(pfn);
         unsigned long offset = GET_PFN(pfn) << PAGE_SHIFT;
+        unsigned long phys_base;
+
+        phys_base = offset | (((unsigned long) space) << 32UL);
 
         /* See comment in mm/memory.c remap_pfn_range */
-        vma->vm_flags |= VM_IO | VM_RESERVED | VM_UNPAGED;
+        vma->vm_flags |= VM_IO | VM_RESERVED | VM_PFNMAP;
+        vma->vm_pgoff = phys_base >> PAGE_SHIFT;
 
         prot = __pgprot(pg_iobits);
         offset -= from;