diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 9276c73f1d811abb83b10b1f7017563b4c1ecdb3..d29bbc0296fb68201b08ee25c4a43de7b923dbdc 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1669,6 +1669,16 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data, return 0; } +static unsigned int tile_row_pages(struct drm_i915_gem_object *obj) +{ + u64 size; + + size = i915_gem_object_get_stride(obj); + size *= i915_gem_object_get_tiling(obj) == I915_TILING_Y ? 32 : 8; + + return size >> PAGE_SHIFT; +} + /** * i915_gem_fault - fault a page into the GTT * @area: CPU VMA in question @@ -1687,6 +1697,7 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data, */ int i915_gem_fault(struct vm_area_struct *area, struct vm_fault *vmf) { +#define MIN_CHUNK_PAGES ((1 << 20) >> PAGE_SHIFT) /* 1 MiB */ struct drm_i915_gem_object *obj = to_intel_bo(area->vm_private_data); struct drm_device *dev = obj->base.dev; struct drm_i915_private *dev_priv = to_i915(dev); @@ -1728,7 +1739,11 @@ int i915_gem_fault(struct vm_area_struct *area, struct vm_fault *vmf) /* Use a partial view if the object is bigger than the aperture. */ if (obj->base.size >= ggtt->mappable_end && !i915_gem_object_is_tiled(obj)) { - static const unsigned int chunk_size = 256; // 1 MiB + unsigned int chunk_size; + + chunk_size = MIN_CHUNK_PAGES; + if (i915_gem_object_is_tiled(obj)) + chunk_size = max(chunk_size, tile_row_pages(obj)); memset(&view, 0, sizeof(view)); view.type = I915_GGTT_VIEW_PARTIAL;