diff options
Diffstat (limited to 'linux-core/drm_vm.c')
| -rw-r--r-- | linux-core/drm_vm.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/linux-core/drm_vm.c b/linux-core/drm_vm.c index b253991f..b2d0bfb1 100644 --- 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)) |