[PATCH] MM: page allocation hooks for VMI backend

[pandora-kernel.git] / include / asm-i386 / pgalloc.h

diff --git a/include/asm-i386/pgalloc.h b/include/asm-i386/pgalloc.h
index 4b1e613..c8dc2d0 100644 (file)
--- a/include/asm-i386/pgalloc.h
+++ b/include/asm-i386/pgalloc.h
@@ -5,13 +5,31 @@
 #include <linux/threads.h>
 #include <linux/mm.h>          /* for struct page */
 
-#define pmd_populate_kernel(mm, pmd, pte) \
-               set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
+#ifdef CONFIG_PARAVIRT
+#include <asm/paravirt.h>
+#else
+#define paravirt_alloc_pt(pfn) do { } while (0)
+#define paravirt_alloc_pd(pfn) do { } while (0)
+#define paravirt_alloc_pd(pfn) do { } while (0)
+#define paravirt_alloc_pd_clone(pfn, clonepfn, start, count) do { } while (0)
+#define paravirt_release_pt(pfn) do { } while (0)
+#define paravirt_release_pd(pfn) do { } while (0)
+#endif
+
+#define pmd_populate_kernel(mm, pmd, pte)                      \
+do {                                                           \
+       paravirt_alloc_pt(__pa(pte) >> PAGE_SHIFT);             \
+       set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)));           \
+} while (0)
 
 #define pmd_populate(mm, pmd, pte)                             \
+do {                                                           \
+       paravirt_alloc_pt(page_to_pfn(pte));                    \
        set_pmd(pmd, __pmd(_PAGE_TABLE +                        \
                ((unsigned long long)page_to_pfn(pte) <<        \
-                       (unsigned long long) PAGE_SHIFT)))
+                       (unsigned long long) PAGE_SHIFT)));     \
+} while (0)
+
 /*
  * Allocate and free page tables.
  */
@@ -32,7 +50,11 @@ static inline void pte_free(struct page *pte)
 }
 
 
-#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
+#define __pte_free_tlb(tlb,pte)                                        \
+do {                                                                   \
+       paravirt_release_pt(page_to_pfn(pte));                          \
+       tlb_remove_page((tlb),(pte));                                   \
+} while (0)
 
 #ifdef CONFIG_X86_PAE
 /*