[PATCH] ARM: Move PGD kernel page table initialisation

It doesn't make sense to have the PGD kernel pointers initialisation
separate from the PGD user pointers, especially when we clean the
data cache over the whole range.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mm/mm-armv.c b/arch/arm/mm/mm-armv.c
index 2c2b93d77d433248dba64b6a1dd525eae51277fc..d79864a0dfa61d9d575a0b13b144bfe3c7c1d80d 100644 (file)
--- a/arch/arm/mm/mm-armv.c
+++ b/arch/arm/mm/mm-armv.c
@@ -169,7 +169,14 @@ pgd_t *get_pgd_slow(struct mm_struct *mm)
 
        memzero(new_pgd, FIRST_KERNEL_PGD_NR * sizeof(pgd_t));
 
+       /*
+        * Copy over the kernel and IO PGD entries
+        */
        init_pgd = pgd_offset_k(0);
+       memcpy(new_pgd + FIRST_KERNEL_PGD_NR, init_pgd + FIRST_KERNEL_PGD_NR,
+                      (PTRS_PER_PGD - FIRST_KERNEL_PGD_NR) * sizeof(pgd_t));
+
+       clean_dcache_area(new_pgd, PTRS_PER_PGD * sizeof(pgd_t));
 
        if (!vectors_high()) {
                /*
@@ -198,14 +205,6 @@ pgd_t *get_pgd_slow(struct mm_struct *mm)
                spin_unlock(&mm->page_table_lock);
        }
 
-       /*
-        * Copy over the kernel and IO PGD entries
-        */
-       memcpy(new_pgd + FIRST_KERNEL_PGD_NR, init_pgd + FIRST_KERNEL_PGD_NR,
-                      (PTRS_PER_PGD - FIRST_KERNEL_PGD_NR) * sizeof(pgd_t));
-
-       clean_dcache_area(new_pgd, PTRS_PER_PGD * sizeof(pgd_t));
-
        return new_pgd;
 
 no_pte: