x86: move pmd functions into common asm/pgalloc.h

Common definitions for 3-level pagetable functions.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index 83765328e265..1c41efedf6d0 100644
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -28,6 +28,14 @@ void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte)
         tlb_remove_page(tlb, pte);
 }
 
+#if PAGETABLE_LEVELS > 2
+void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
+{
+        paravirt_release_pd(__pa(pmd) >> PAGE_SHIFT);
+        tlb_remove_page(tlb, virt_to_page(pmd));
+}
+#endif  /* PAGETABLE_LEVELS > 2 */
+
 #ifdef CONFIG_X86_64
 static inline void pgd_list_add(pgd_t *pgd)
 {