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| author | Andi Kleen <ak@suse.de> | 2008-02-04 16:48:09 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-02-04 16:48:09 +0100 |
| commit | c2f71ee2140b2a506735ff9fcb7e3b1dfaab8f2b (patch) | |
| tree | b765d37850cdcfb4ac5b216935c04a5f85c0e960 /arch/x86/mm | |
| parent | x86: add pgtable accessor functions for gbpages (diff) | |
| download | linux-c2f71ee2140b2a506735ff9fcb7e3b1dfaab8f2b.tar.xz linux-c2f71ee2140b2a506735ff9fcb7e3b1dfaab8f2b.zip | |
x86: add gbpages support to lookup_address
[ tglx@linutronix.de: fix bootup crash on sparse mappings. ]
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/mm/pageattr.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index 9be684e61dcb..143fbafc948a 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -209,6 +209,11 @@ pte_t *lookup_address(unsigned long address, int *level) pud = pud_offset(pgd, address); if (pud_none(*pud)) return NULL; + + *level = PG_LEVEL_1G; + if (pud_large(*pud) || !pud_present(*pud)) + return (pte_t *)pud; + pmd = pmd_offset(pud, address); if (pmd_none(*pmd)) return NULL; |