Re: [PATCH 1/2] drm/i915: Assert the vma can fit within the address space

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Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> writes:

> Useful sanity check that the vma is legal to bind inside the address
> space.
>
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>

Reviewed-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>

> ---
>  drivers/gpu/drm/i915/i915_vma.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c
> index 635f2635b1f2..68e66ffb95e8 100644
> --- a/drivers/gpu/drm/i915/i915_vma.c
> +++ b/drivers/gpu/drm/i915/i915_vma.c
> @@ -107,6 +107,8 @@ vma_create(struct drm_i915_gem_object *obj,
>  		}
>  	}
>  
> +	GEM_BUG_ON(vma->size > vm->total);
> +
>  	if (i915_is_ggtt(vm)) {
>  		GEM_BUG_ON(overflows_type(vma->size, u32));
>  		vma->fence_size = i915_gem_fence_size(vm->i915, vma->size,
> -- 
> 2.11.0
>
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