[PATCH] ppc64: update to use the new 4L headers

This patch converts ppc64 to use the generic pgtable-nopud.h instead of the
"fixup" header.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 23 insertions, 18 deletions

diff --git a/include/asm-ppc64/pgtable.h b/include/asm-ppc64/pgtable.h
index a26120517c54..b984e2747e0c 100644
--- a/include/asm-ppc64/pgtable.h
+++ b/include/asm-ppc64/pgtable.h
@@ -1,8 +1,6 @@
 #ifndef _PPC64_PGTABLE_H
 #define _PPC64_PGTABLE_H
 
-#include <asm-generic/4level-fixup.h>
-
 /*
  * This file contains the functions and defines necessary to modify and use
  * the ppc64 hashed page table.
@@ -17,6 +15,8 @@
 #include <asm/tlbflush.h>
 #endif /* __ASSEMBLY__ */
 
+#include <asm-generic/pgtable-nopud.h>
+
 /* PMD_SHIFT determines what a second-level page table entry can map */
 #define PMD_SHIFT       (PAGE_SHIFT + PAGE_SHIFT - 3)
 #define PMD_SIZE        (1UL << PMD_SHIFT)
@@ -228,12 +228,13 @@ void hugetlb_mm_free_pgd(struct mm_struct *mm);
 #define pmd_page_kernel(pmd)    \
         (__bpn_to_ba(pmd_val(pmd) >> PMD_TO_PTEPAGE_SHIFT))
 #define pmd_page(pmd)           virt_to_page(pmd_page_kernel(pmd))
-#define pgd_set(pgdp, pmdp)     (pgd_val(*(pgdp)) = (__ba_to_bpn(pmdp)))
-#define pgd_none(pgd)           (!pgd_val(pgd))
-#define pgd_bad(pgd)            ((pgd_val(pgd)) == 0)
-#define pgd_present(pgd)        (pgd_val(pgd) != 0UL)
-#define pgd_clear(pgdp)         (pgd_val(*(pgdp)) = 0UL)
-#define pgd_page(pgd)           (__bpn_to_ba(pgd_val(pgd))) 
+
+#define pud_set(pudp, pmdp)     (pud_val(*(pudp)) = (__ba_to_bpn(pmdp)))
+#define pud_none(pud)           (!pud_val(pud))
+#define pud_bad(pud)            ((pud_val(pud)) == 0UL)
+#define pud_present(pud)        (pud_val(pud) != 0UL)
+#define pud_clear(pudp)         (pud_val(*(pudp)) = 0UL)
+#define pud_page(pud)           (__bpn_to_ba(pud_val(pud)))
 
 /* 
  * Find an entry in a page-table-directory.  We combine the address region 
@@ -245,12 +246,13 @@ void hugetlb_mm_free_pgd(struct mm_struct *mm);
 #define pgd_offset(mm, address)  ((mm)->pgd + pgd_index(address))
 
 /* Find an entry in the second-level page table.. */
-#define pmd_offset(dir,addr) \
-  ((pmd_t *) pgd_page(*(dir)) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)))
+#define pmd_offset(pudp,addr) \
+  ((pmd_t *) pud_page(*(pudp)) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)))
 
 /* Find an entry in the third-level page table.. */
 #define pte_offset_kernel(dir,addr) \
-  ((pte_t *) pmd_page_kernel(*(dir)) + (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
+  ((pte_t *) pmd_page_kernel(*(dir)) \
+ + (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
 
 #define pte_offset_map(dir,addr)        pte_offset_kernel((dir), (addr))
 #define pte_offset_map_nested(dir,addr) pte_offset_kernel((dir), (addr))
@@ -582,19 +584,22 @@ extern long native_hpte_insert(unsigned long hpte_group, unsigned long va,
 static inline pte_t *find_linux_pte(pgd_t *pgdir, unsigned long ea)
 {
         pgd_t *pg;
+        pud_t *pu;
         pmd_t *pm;
         pte_t *pt = NULL;
         pte_t pte;
 
         pg = pgdir + pgd_index(ea);
         if (!pgd_none(*pg)) {
-
-                pm = pmd_offset(pg, ea);
-                if (pmd_present(*pm)) { 
-                        pt = pte_offset_kernel(pm, ea);
-                        pte = *pt;
-                        if (!pte_present(pte))
-                                pt = NULL;
+                pu = pud_offset(pg, ea);
+                if (!pud_none(*pu)) {
+                        pm = pmd_offset(pu, ea);
+                        if (pmd_present(*pm)) {
+                                pt = pte_offset_kernel(pm, ea);
+                                pte = *pt;
+                                if (!pte_present(pte))
+                                        pt = NULL;
+                        }
                 }
         }