remove checks that make ppc64 not work properly... also fix ppc64 check..

    we should be safe doing this..

diff --git a/linux-core/drm_vm.c b/linux-core/drm_vm.c
index b253991..b2d0bfb 100644 (file)
--- a/linux-core/drm_vm.c
+++ b/linux-core/drm_vm.c
@@ -634,18 +634,17 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
                /* fall through to _DRM_FRAME_BUFFER... */
        case _DRM_FRAME_BUFFER:
        case _DRM_REGISTERS:
-               if (map->offset >= __pa(high_memory)) {
 #if defined(__i386__) || defined(__x86_64__)
-                       if (boot_cpu_data.x86 > 3 && map->type != _DRM_AGP) {
-                               pgprot_val(vma->vm_page_prot) |= _PAGE_PCD;
-                               pgprot_val(vma->vm_page_prot) &= ~_PAGE_PWT;
-                       }
+               if (boot_cpu_data.x86 > 3 && map->type != _DRM_AGP) {
+                       pgprot_val(vma->vm_page_prot) |= _PAGE_PCD;
+                       pgprot_val(vma->vm_page_prot) &= ~_PAGE_PWT;
+               }
 #elif defined(__powerpc__)
-                       pgprot_val(vma->vm_page_prot) |=
-                           _PAGE_NO_CACHE | _PAGE_GUARDED;
+               pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE;
+               if (map->type == _DRM_REGISTERS)
+                       pgprot_val(vma->vm_page_prot) |= _PAGE_GUARDED;
 #endif
-                       vma->vm_flags |= VM_IO; /* not in core dump */
-               }
+               vma->vm_flags |= VM_IO; /* not in core dump */
 #if defined(__ia64__)
                if (efi_range_is_wc(vma->vm_start, vma->vm_end -
                                    vma->vm_start))