[PATCH] [6/9] GBPAGES: Add gbpages support to lookup_address

[Andi Kleen]

Signed-off-by: Andi Kleen <[EMAIL PROTECTED]>

---
 arch/x86/mm/pageattr.c    |    5 +++++
 include/asm-x86/pgtable.h |    1 +
 2 files changed, 6 insertions(+)

Index: linux/arch/x86/mm/pageattr.c
===================================================================
--- linux.orig/arch/x86/mm/pageattr.c
+++ linux/arch/x86/mm/pageattr.c
@@ -152,9 +152,14 @@ pte_t *lookup_address(unsigned long addr
 
        if (pgd_none(*pgd))
                return NULL;
+
+       *level = PG_LEVEL_1G;
        pud = pud_offset(pgd, address);
        if (pud_none(*pud))
                return NULL;
+       if (pud_large(*pud))
+               return (pte_t *)pud;
+
        pmd = pmd_offset(pud, address);
        if (pmd_none(*pmd))
                return NULL;
Index: linux/include/asm-x86/pgtable.h
===================================================================
--- linux.orig/include/asm-x86/pgtable.h
+++ linux/include/asm-x86/pgtable.h
@@ -242,6 +242,7 @@ enum {
        PG_LEVEL_NONE,
        PG_LEVEL_4K,
        PG_LEVEL_2M,
+       PG_LEVEL_1G,
 };
 
 /*
--
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