[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 2c2b93d..d79864a 100644
--- a/arch/arm/mm/mm-armv.c
+++ b/arch/arm/mm/mm-armv.c
@@ -169,7 +169,14 @@
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 @@
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: