virtualbox-dkms.md

参考にしたもの

• https://askubuntu.com/questions/932125/kernel-4-12-virtualbox-vm-not-working
• http://eiselekd.hatenablog.com/entry/2017/08/25/222221

virtualbox-dkms.patch

diff -urN --no-dereference a/r0drv/linux/alloc-r0drv-linux.c b/r0drv/linux/alloc-r0drv-linux.c
--- a/r0drv/linux/alloc-r0drv-linux.c	2017-04-29 00:04:49.000000000 +0900
+++ b/r0drv/linux/alloc-r0drv-linux.c	2017-09-08 02:12:19.325178643 +0900
@@ -35,7 +35,10 @@
 #include <iprt/assert.h>
 #include <iprt/err.h>
 #include "r0drv/alloc-r0drv.h"
-
+#include <linux/kmemleak.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
+#include <asm/set_memory.h>
+#endif
 
 #if (defined(RT_ARCH_AMD64) || defined(DOXYGEN_RUNNING)) && !defined(RTMEMALLOC_EXEC_HEAP)
 # if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23)
diff -urN --no-dereference a/r0drv/linux/memobj-r0drv-linux.c b/r0drv/linux/memobj-r0drv-linux.c
--- a/r0drv/linux/memobj-r0drv-linux.c	2017-04-29 00:04:49.000000000 +0900
+++ b/r0drv/linux/memobj-r0drv-linux.c	2017-09-08 02:12:19.325178643 +0900
@@ -899,6 +899,9 @@
     unsigned long   pfn;
     struct page    *pPage;
     pte_t          *pEntry;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
+    p4d_t           p4d;
+#endif
     union
     {
         pgd_t       Global;
@@ -917,9 +920,18 @@
     u.Global = *pgd_offset(current->active_mm, ulAddr);
     if (RT_UNLIKELY(pgd_none(u.Global)))
         return NULL;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
+    p4d = *p4d_offset(&u.Global, ulAddr);
+    if (RT_UNLIKELY(p4d_none(p4d) || p4d_large(p4d) || !p4d_present(p4d)))
+        return NULL;
+#endif
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 11)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
+    u.Upper = *pud_offset(&p4d, ulAddr);
+#else
     u.Upper = *pud_offset(&u.Global, ulAddr);
+#endif
     if (RT_UNLIKELY(pud_none(u.Upper)))
         return NULL;
 # if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25)
@@ -1463,13 +1475,23 @@
 {
     int rc = -ENOMEM;
     pgd_t *pgd;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
+    p4d_t *p4d;
+#endif
 
     spin_lock(&mm->page_table_lock);
 
     pgd = pgd_offset(mm, ulAddr);
     if (!pgd_none(*pgd) && !pgd_bad(*pgd))
     {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
+        p4d = p4d_offset(*pgd, ulAddr);
+        if (p4d_none(*p4d))
+            goto exit;
+        pmd_t *pmd = pmd_offset(p4d, ulAddr);
+#else
         pmd_t *pmd = pmd_offset(pgd, ulAddr);
+#endif
         if (!pmd_none(*pmd))
         {
             pte_t *ptep = pte_offset_map(pmd, ulAddr);
@@ -1487,6 +1509,9 @@
         }
     }
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
+exit:
+#endif
     spin_unlock(&mm->page_table_lock);
     return rc;
 }
diff -urN --no-dereference a/r0drv/linux/waitqueue-r0drv-linux.h b/r0drv/linux/waitqueue-r0drv-linux.h
--- a/r0drv/linux/waitqueue-r0drv-linux.h	2017-04-29 00:04:49.000000000 +0900
+++ b/r0drv/linux/waitqueue-r0drv-linux.h	2017-09-08 02:12:19.326178869 +0900
@@ -46,7 +46,7 @@
 typedef struct RTR0SEMLNXWAIT
 {
     /** The wait queue entry. */
-    wait_queue_t    WaitQE;
+    wait_queue_entry_t    WaitQE;
     /** The absolute timeout given as nano seconds since the start of the
      *  monotonic clock. */
     uint64_t        uNsAbsTimeout;
diff -urN --no-dereference a/vboxdrv/linux/SUPDrv-linux.c b/vboxdrv/linux/SUPDrv-linux.c
--- a/vboxdrv/linux/SUPDrv-linux.c	2017-04-29 00:04:14.000000000 +0900
+++ b/vboxdrv/linux/SUPDrv-linux.c	2017-09-08 02:12:19.331179999 +0900
@@ -1397,7 +1397,7 @@
 SUPR0DECL(uint32_t) SUPR0GetKernelFeatures(void)
 {
     uint32_t fFlags = 0;
-#ifdef CONFIG_PAX_KERNEXEC
+#if defined(CONFIG_PAX_KERNEXEC) || LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
     fFlags |= SUPKERNELFEATURES_GDT_READ_ONLY;
 #endif
 #if defined(VBOX_STRICT) || defined(VBOX_WITH_EFLAGS_AC_SET_IN_VBOXDRV)