x86: return the page table level in lookup_address()

based on this patch from Andi Kleen:

|  Subject: CPA: Return the page table level in lookup_address()
|  From: Andi Kleen <ak@suse.de>
|
|  Needed for the next change.
|
|  And change all the callers.

and ported it to x86.git.

Signed-off-by: Andi Kleen <ak@suse.de>
Acked-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/x86/mm/fault_32.c b/arch/x86/mm/fault_32.c
index f7972ae7da07..f4f8c324715f 100644
--- a/arch/x86/mm/fault_32.c
+++ b/arch/x86/mm/fault_32.c
@@ -613,7 +613,8 @@ no_context:
 
 #ifdef CONFIG_X86_PAE
                 if (error_code & PF_INSTR) {
-                        pte_t *pte = lookup_address(address);
+                        int level;
+                        pte_t *pte = lookup_address(address, &level);
 
                         if (pte && pte_present(*pte) && !pte_exec(*pte))
                                 printk(KERN_CRIT "kernel tried to execute "