Addresses passed in pti_user_pagetable_walk_*() are not supposed to
change at runtime, make them const to aviod future slipups.
Signed-off-by: Jiang Biao <jiang.bi...@zte.com.cn>
---
arch/x86/mm/pti.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/x86/mm/pti.c b/arch/x86/mm/pti.c
index a368656..ac2cbdd 100644
--- a/arch/x86/mm/pti.c
+++ b/arch/x86/mm/pti.c
@@ -164,7 +164,7 @@ pgd_t __pti_set_user_pgd(pgd_t *pgdp, pgd_t pgd)
*
* Returns a pointer to a P4D on success, or NULL on failure.
*/
-static p4d_t *pti_user_pagetable_walk_p4d(unsigned long address)
+static p4d_t *pti_user_pagetable_walk_p4d(const unsigned long address)
{
pgd_t *pgd = kernel_to_user_pgdp(pgd_offset_k(address));
gfp_t gfp = (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO);
@@ -192,7 +192,7 @@ static p4d_t *pti_user_pagetable_walk_p4d(unsigned long
address)
*
* Returns a pointer to a PMD on success, or NULL on failure.
*/
-static pmd_t *pti_user_pagetable_walk_pmd(unsigned long address)
+static pmd_t *pti_user_pagetable_walk_pmd(const unsigned long address)
{
gfp_t gfp = (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO);
pud_t *pud;
@@ -236,7 +236,7 @@ static pmd_t *pti_user_pagetable_walk_pmd(unsigned long
address)
*
* Returns a pointer to a PTE on success, or NULL on failure.
*/
-static __init pte_t *pti_user_pagetable_walk_pte(unsigned long address)
+static __init pte_t *pti_user_pagetable_walk_pte(const unsigned long address)
{
gfp_t gfp = (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO);
pte_t *pte;
--
2.7.4
