diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 50 |
1 files changed, 7 insertions, 43 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 5398af7f7580..04607d4115d6 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1705,7 +1705,6 @@ int i915_gem_fault(struct vm_area_struct *area, struct vm_fault *vmf) bool write = !!(vmf->flags & FAULT_FLAG_WRITE); struct i915_vma *vma; pgoff_t page_offset; - unsigned long pfn; unsigned int flags; int ret; @@ -1790,48 +1789,13 @@ int i915_gem_fault(struct vm_area_struct *area, struct vm_fault *vmf) goto err_unpin; /* Finally, remap it using the new GTT offset */ - pfn = ggtt->mappable_base + i915_ggtt_offset(vma); - pfn >>= PAGE_SHIFT; - - if (vma->ggtt_view.type == I915_GGTT_VIEW_NORMAL) { - if (!obj->fault_mappable) { - unsigned long size = - min_t(unsigned long, - area->vm_end - area->vm_start, - obj->base.size) >> PAGE_SHIFT; - unsigned long base = area->vm_start; - int i; - - for (i = 0; i < size; i++) { - ret = vm_insert_pfn(area, - base + i * PAGE_SIZE, - pfn + i); - if (ret) - break; - } - } else - ret = vm_insert_pfn(area, - (unsigned long)vmf->virtual_address, - pfn + page_offset); - } else { - /* Overriding existing pages in partial view does not cause - * us any trouble as TLBs are still valid because the fault - * is due to userspace losing part of the mapping or never - * having accessed it before (at this partials' range). - */ - const struct i915_ggtt_view *view = &vma->ggtt_view; - unsigned long base = area->vm_start + - (view->params.partial.offset << PAGE_SHIFT); - unsigned int i; - - for (i = 0; i < view->params.partial.size; i++) { - ret = vm_insert_pfn(area, - base + i * PAGE_SIZE, - pfn + i); - if (ret) - break; - } - } + ret = remap_io_mapping(area, + area->vm_start + (vma->ggtt_view.params.partial.offset << PAGE_SHIFT), + (ggtt->mappable_base + vma->node.start) >> PAGE_SHIFT, + min_t(u64, vma->size, area->vm_end - area->vm_start), + &ggtt->mappable); + if (ret) + goto err_unpin; obj->fault_mappable = true; err_unpin: |