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Diffstat (limited to 'linux-core/drm_vm.c')
-rw-r--r--linux-core/drm_vm.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/linux-core/drm_vm.c b/linux-core/drm_vm.c
index 3372498b..47693b03 100644
--- a/linux-core/drm_vm.c
+++ b/linux-core/drm_vm.c
@@ -151,7 +151,8 @@ static __inline__ struct page *drm_do_vm_shm_nopage(struct vm_area_struct *vma,
offset = address - vma->vm_start;
i = (unsigned long)map->handle + offset;
- page = vmalloc_to_page((void *)i);
+ page = (map->type == _DRM_CONSISTENT) ?
+ virt_to_page((void *)i) : vmalloc_to_page((void *)i);
if (!page)
return NOPAGE_OOM;
get_page(page);
@@ -663,8 +664,9 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
break;
case _DRM_SHM:
case _DRM_CONSISTENT:
- /* Consistent memory is really like shared memory. It's only
- * allocated in a different way. */
+ /* Consistent memory is much like shared memory. The
+ * only difference is that drm_vm_shm_nopage must use
+ * virt_to_page instead of vmalloc_to_page. */
vma->vm_ops = &drm_vm_shm_ops;
vma->vm_private_data = (void *)map;
/* Don't let this area swap. Change when