[PATCH] ARM: Add top_pmd, which points at the top-most page table
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
diff --git a/arch/arm/mm/mm-armv.c b/arch/arm/mm/mm-armv.c
index 2a514b0..fa60fd6 100644
--- a/arch/arm/mm/mm-armv.c
+++ b/arch/arm/mm/mm-armv.c
@@ -37,6 +37,8 @@
EXPORT_SYMBOL(pgprot_kernel);
+pmd_t *top_pmd;
+
struct cachepolicy {
const char policy[16];
unsigned int cr_mask;
@@ -682,6 +684,8 @@
flush_cache_all();
flush_tlb_all();
+
+ top_pmd = pmd_off_k(VECTORS_HIGH);
}
/*
diff --git a/include/asm-arm/page.h b/include/asm-arm/page.h
index 4ca3a8e..d26d157 100644
--- a/include/asm-arm/page.h
+++ b/include/asm-arm/page.h
@@ -171,6 +171,9 @@
#endif /* STRICT_MM_TYPECHECKS */
+/* the upper-most page table pointer */
+extern pmd_t *top_pmd;
+
/* Pure 2^n version of get_order */
static inline int get_order(unsigned long size)
{