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x86: return the page table level in lookup_address()

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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>
This commit is contained in:
Ingo Molnar
2008-01-30 13:33:43 +01:00
parent a5a5dc3179
commit f0646e43ac
7 changed files with 22 additions and 11 deletions
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9
arch/x86/xen/mmu.c
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@ -58,7 +58,8 @@
xmaddr_t arbitrary_virt_to_machine(unsigned long address)
{
pte_t *pte = lookup_address(address);
int level;
pte_t *pte = lookup_address(address, &level);
unsigned offset = address & PAGE_MASK;
BUG_ON(pte == NULL);
@ -70,8 +71,9 @@ void make_lowmem_page_readonly(void *vaddr)
{
pte_t *pte, ptev;
unsigned long address = (unsigned long)vaddr;
int level;
pte = lookup_address(address);
pte = lookup_address(address, &level);
BUG_ON(pte == NULL);
ptev = pte_wrprotect(*pte);
@ -84,8 +86,9 @@ void make_lowmem_page_readwrite(void *vaddr)
{
pte_t *pte, ptev;
unsigned long address = (unsigned long)vaddr;
int level;
pte = lookup_address(address);
pte = lookup_address(address, &level);
BUG_ON(pte == NULL);
ptev = pte_mkwrite(*pte);