From 7759ca3aac79648d01c9edcb3b00503c02bec2f5 Mon Sep 17 00:00:00 2001
From: Zhipeng Gong <zhipeng.gong@intel.com>
Date: Mon, 17 Sep 2018 15:45:08 +0800
Subject: [PATCH] drm/i915/gvt: clear ggtt entries when destroy vgpu
Git-commit: 7759ca3aac79648d01c9edcb3b00503c02bec2f5
Patch-mainline: v4.19-rc5
References: bsc#1051510

When one vgpu is destroyed, its ggtt entries are not cleared.
This patch clears ggtt entries to avoid information leak.

V2: add 'Fixes' tag (Zhenyu)

Fixes: 2707e4446688 ("drm/i915/gvt: vGPU graphics memory virtualization")
Signed-off-by: Zhipeng Gong <zhipeng.gong@intel.com>
Reviewed-by: Hang Yuan <hang.yuan@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/i915/gvt/vgpu.c |    1 +
 1 file changed, 1 insertion(+)

--- 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
 	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);