0044-drm-i915-gvt-invalidate-old-ggtt-page-when-update-gg.patch

From 6a2b395ac6d4771462ebfcc3131c177655b615e0 Mon Sep 17 00:00:00 2001
From: Hang Yuan <hang.yuan@linux.intel.com>
Date: Wed, 19 Sep 2018 14:42:09 +0800
Subject: [PATCH 44/56] drm/i915/gvt: invalidate old ggtt page when update ggtt
 entry

Previously only cancelled dma map of a ggtt page when the ggtt entry was
cleared. This patch will cancel dma map of an old ggtt page as well when
the ggtt entry is updated with new page address.

Fixes: 7598e8700e9a(drm/i915/gvt: Missed to cancel dma map for ggtt entries)
Signed-off-by: Hang Yuan <hang.yuan@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
---
 drivers/gpu/drm/i915/gvt/gtt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index 1fdc79808443..4523cd245cdf 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -2313,7 +2313,7 @@ static int emulate_ggtt_mmio_write(struct intel_vgpu *vgpu, unsigned int off,
 out:
 	ggtt_set_guest_entry(ggtt_mm, &e, g_gtt_index);
 
-	ggtt_get_host_entry(ggtt_mm, &e, g_gtt_index);
+	ggtt_get_host_entry(ggtt_mm, &e, h_gtt_index);
 	ggtt_invalidate_pte(vgpu, &e);
 
 	ggtt_set_host_entry(ggtt_mm, &m, h_gtt_index);
-- 
2.34.1