[PATCH] drm/i915/gvt: clear ggtt entries when destroy vgpu

[Yuan, Hang]

The patch looks good to me. Thanks.
Acked-by: Hang Yuan <hang.yuan at intel.com>

> -----Original Message-----
> From: intel-gvt-dev [mailto:intel-gvt-dev-bounces at lists.freedesktop.org] On
> Behalf Of Zhipeng Gong
> Sent: Monday, September 17, 2018 1:19 PM
> To: intel-gvt-dev at lists.freedesktop.org
> Subject: [PATCH] drm/i915/gvt: clear ggtt entries when destroy vgpu
> 
> When one vgpu is destroyed, its ggtt entries are not cleared.
> This patch clears ggtt entries to avoid information leak.
> 
> Signed-off-by: Zhipeng Gong <zhipeng.gong at intel.com>
> ---
>  drivers/gpu/drm/i915/gvt/vgpu.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/i915/gvt/vgpu.c
> b/drivers/gpu/drm/i915/gvt/vgpu.c index a4e8e3cf74fd..c628be05fbfe
> 100644
> --- a/drivers/gpu/drm/i915/gvt/vgpu.c
> +++ b/drivers/gpu/drm/i915/gvt/vgpu.c
> @@ -281,6 +281,7 @@ void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu)
>  	intel_vgpu_clean_submission(vgpu);
>  	intel_vgpu_clean_display(vgpu);
>  	intel_vgpu_clean_opregion(vgpu);
> +	intel_vgpu_reset_ggtt(vgpu, true);
>  	intel_vgpu_clean_gtt(vgpu);
>  	intel_gvt_hypervisor_detach_vgpu(vgpu);
>  	intel_vgpu_free_resource(vgpu);
> --
> 2.18.0
> 
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