diff options
Diffstat (limited to 'linux-core/drm_vm.c')
| -rw-r--r-- | linux-core/drm_vm.c | 21 |
1 files changed, 5 insertions, 16 deletions
diff --git a/linux-core/drm_vm.c b/linux-core/drm_vm.c index 6803a57b..c07c9aff 100644 --- a/linux-core/drm_vm.c +++ b/linux-core/drm_vm.c @@ -130,9 +130,6 @@ struct page *DRM(vm_shm_nopage)(struct vm_area_struct *vma, drm_map_t *map = (drm_map_t *)vma->vm_private_data; unsigned long offset; unsigned long i; - pgd_t *pgd; - pmd_t *pmd; - pte_t *pte; struct page *page; if (address > vma->vm_end) return NOPAGE_SIGBUS; /* Disallow mremap */ @@ -140,17 +137,9 @@ struct page *DRM(vm_shm_nopage)(struct vm_area_struct *vma, offset = address - vma->vm_start; i = (unsigned long)map->handle + offset; - /* We have to walk page tables here because we need large SAREA's, and - * they need to be virtually contiguous in kernel space. - */ - pgd = pgd_offset_k( i ); - if( !pgd_present( *pgd ) ) return NOPAGE_OOM; - pmd = pmd_offset( pgd, i ); - if( !pmd_present( *pmd ) ) return NOPAGE_OOM; - pte = pte_offset( pmd, i ); - if( !pte_present( *pte ) ) return NOPAGE_OOM; - - page = pte_page(*pte); + page = vmalloc_to_page((void *)i); + if (!page) + return NOPAGE_OOM; get_page(page); DRM_DEBUG("shm_nopage 0x%lx\n", address); @@ -462,12 +451,12 @@ int DRM(mmap)(struct file *filp, struct vm_area_struct *vma) } offset = DRIVER_GET_REG_OFS(); #ifdef __sparc__ - if (io_remap_page_range(vma->vm_start, + if (io_remap_page_range(DRM_RPR_ARG(vma) vma->vm_start, VM_OFFSET(vma) + offset, vma->vm_end - vma->vm_start, vma->vm_page_prot, 0)) #else - if (remap_page_range(vma->vm_start, + if (remap_page_range(DRM_RPR_ARG(vma) vma->vm_start, VM_OFFSET(vma) + offset, vma->vm_end - vma->vm_start, vma->vm_page_prot)) |