From: Chris Wilson Date: Thu, 19 Jan 2017 19:26:59 +0000 (+0000) Subject: drm/i915: Assert that created vma has a whole number of pages X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b00ddb27324eee53cbed8be7fc00dc572727bb0e;p=linux-beck.git drm/i915: Assert that created vma has a whole number of pages VMA (and their objects) are supposed to composed of whole pages. Add an assert to catch any invalid construct when we create the VMA. Signed-off-by: Chris Wilson Cc: Mika Kuoppala Reviewed-by: Mika Kuoppala Link: http://patchwork.freedesktop.org/patch/msgid/20170119192659.31789-6-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen --- diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c index ecb495b1c5d3..559966dc3d35 100644 --- a/drivers/gpu/drm/i915/i915_vma.c +++ b/drivers/gpu/drm/i915/i915_vma.c @@ -110,6 +110,8 @@ vma_create(struct drm_i915_gem_object *obj, if (unlikely(vma->size > vm->total)) goto err_vma; + GEM_BUG_ON(!IS_ALIGNED(vma->size, I915_GTT_PAGE_SIZE)); + if (i915_is_ggtt(vm)) { if (unlikely(overflows_type(vma->size, u32))) goto err_vma;