--- kernel/nv-vtophys.c	2016-12-09 20:30:08.000000000 +0100
+++ kernel/nv-vtophys.c	2017-05-10 10:05:28.452722808 +0200
@@ -25,6 +25,9 @@ NvU64 nv_get_phys_address(
 #else
     struct mm_struct *mm;
     pgd_t *pgd = NULL;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
+    p4d_t *p4d = NULL;
+#endif
     pmd_t *pmd = NULL;
     pte_t *pte = NULL;
     NvU64 retval;
@@ -41,7 +42,11 @@ NvU64 nv_get_phys_address(
     if (!NV_PGD_PRESENT(pgd))
         goto failed;
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
+    pmd = NV_PMD_OFFSET(address, p4d);
+#else
     pmd = NV_PMD_OFFSET(address, pgd);
+#endif
     if (!NV_PMD_PRESENT(pmd))
         goto failed;
 
--- kernel/nv-linux.h	2017-05-10 09:19:05.820789291 +0200
+++ kernel/nv-linux.h	2017-05-10 10:05:57.656844602 +0200
@@ -1389,11 +1389,16 @@ typedef void irqreturn_t;
 #define NV_PMD_UNMAP(pmd) pmd_unmap(pmd);
 #else
 #if defined(PUD_SHIFT) /* 4-level pgtable */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
+#define _PGD_P4D p4d
+#else
+#define _PGD_P4D pgd
+#endif
-#define NV_PMD_OFFSET(address, pgd)                     \
+#define NV_PMD_OFFSET(address, _PGD_P4D)                \
    ({                                                   \
         pmd_t *__pmd = NULL;                            \
         pud_t *__pud;                                   \
-        __pud = pud_offset(pgd, address);               \
+        __pud = pud_offset(_PGD_P4D, address);          \
         if ((__pud != NULL) &&                          \
             !(pud_bad(*__pud) || pud_none(*__pud)))     \
             __pmd = pmd_offset(__pud, address);         \