diff --git a/drivers/gpu/drm/i915/gvt/edid.c b/drivers/gpu/drm/i915/gvt/edid.c
index f1648fe5e5eaac09105b50c388cb63101b74bd2d..42cd09ec63fa7c41b69d684f8cf382a04f15b2ab 100644
--- a/drivers/gpu/drm/i915/gvt/edid.c
+++ b/drivers/gpu/drm/i915/gvt/edid.c
@@ -495,7 +495,8 @@ void intel_gvt_i2c_handle_aux_ch_write(struct intel_vgpu *vgpu,
 			unsigned char val = edid_get_byte(vgpu);
 
 			aux_data_for_write = (val << 16);
-		}
+		} else
+			aux_data_for_write = (0xff << 16);
 	}
 	/* write the return value in AUX_CH_DATA reg which includes:
 	 * ACK of I2C_WRITE
diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index da73127158241bb6659ab1c5c942c30c39fb2a56..b832bea64e0367ed6c25bf031a2a71db82d7edcc 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -1837,11 +1837,15 @@ static int emulate_gtt_mmio_write(struct intel_vgpu *vgpu, unsigned int off,
 		ret = gtt_entry_p2m(vgpu, &e, &m);
 		if (ret) {
 			gvt_vgpu_err("fail to translate guest gtt entry\n");
-			return ret;
+			/* guest driver may read/write the entry when partial
+			 * update the entry in this situation p2m will fail
+			 * settting the shadow entry to point to a scratch page
+			 */
+			ops->set_pfn(&m, gvt->gtt.scratch_ggtt_mfn);
 		}
 	} else {
 		m = e;
-		m.val64 = 0;
+		ops->set_pfn(&m, gvt->gtt.scratch_ggtt_mfn);
 	}
 
 	ggtt_set_shadow_entry(ggtt_mm, &m, g_gtt_index);
diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
index eaff45d417e8a0a5eeb77f6dc28b6eef98b4df4a..6da9ae1618e35e39fb06e99caec00e1455132873 100644
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -970,6 +970,14 @@ static int dp_aux_ch_ctl_mmio_write(struct intel_vgpu *vgpu,
 	return 0;
 }
 
+static int mbctl_write(struct intel_vgpu *vgpu, unsigned int offset,
+		void *p_data, unsigned int bytes)
+{
+	*(u32 *)p_data &= (~GEN6_MBCTL_ENABLE_BOOT_FETCH);
+	write_vreg(vgpu, offset, p_data, bytes);
+	return 0;
+}
+
 static int vga_control_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 		void *p_data, unsigned int bytes)
 {
@@ -2238,7 +2246,7 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
 	MMIO_D(0x7180, D_ALL);
 	MMIO_D(0x7408, D_ALL);
 	MMIO_D(0x7c00, D_ALL);
-	MMIO_D(GEN6_MBCTL, D_ALL);
+	MMIO_DH(GEN6_MBCTL, D_ALL, NULL, mbctl_write);
 	MMIO_D(0x911c, D_ALL);
 	MMIO_D(0x9120, D_ALL);
 	MMIO_DFH(GEN7_UCGCTL4, D_ALL, F_CMD_ACCESS, NULL, NULL);
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index 1ea3eb270de8f38d32b4c44ffa3e5cc420a2f8b8..d641214578a7dc6631e866bbc91c2d38f3e95a76 100644
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -1326,6 +1326,7 @@ static int kvmgt_guest_init(struct mdev_device *mdev)
 	vgpu->handle = (unsigned long)info;
 	info->vgpu = vgpu;
 	info->kvm = kvm;
+	kvm_get_kvm(info->kvm);
 
 	kvmgt_protect_table_init(info);
 	gvt_cache_init(vgpu);
@@ -1347,6 +1348,7 @@ static bool kvmgt_guest_exit(struct kvmgt_guest_info *info)
 	}
 
 	kvm_page_track_unregister_notifier(info->kvm, &info->track_node);
+	kvm_put_kvm(info->kvm);
 	kvmgt_protect_table_destroy(info);
 	gvt_cache_destroy(info->vgpu);
 	vfree(info);
diff --git a/drivers/gpu/drm/i915/gvt/render.c b/drivers/gpu/drm/i915/gvt/render.c
index 95ee091ce085de3bb2b2b034367213f9eeac6f2c..0beb83563b0870edecae35cf5a5807ba1bfc4ae8 100644
--- a/drivers/gpu/drm/i915/gvt/render.c
+++ b/drivers/gpu/drm/i915/gvt/render.c
@@ -207,7 +207,7 @@ static void load_mocs(struct intel_vgpu *vgpu, int ring_id)
 		l3_offset.reg = 0xb020;
 		for (i = 0; i < 32; i++) {
 			gen9_render_mocs_L3[i] = I915_READ(l3_offset);
-			I915_WRITE(l3_offset, vgpu_vreg(vgpu, offset));
+			I915_WRITE(l3_offset, vgpu_vreg(vgpu, l3_offset));
 			POSTING_READ(l3_offset);
 			l3_offset.reg += 4;
 		}
diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c
index c4353ed86d4b30da172c3afc8fcbaf251a582437..a44782412f2c9922bd4ec4fa5160bdb588db6cf0 100644
--- a/drivers/gpu/drm/i915/gvt/scheduler.c
+++ b/drivers/gpu/drm/i915/gvt/scheduler.c
@@ -127,6 +127,11 @@ static int populate_shadow_context(struct intel_vgpu_workload *workload)
 	return 0;
 }
 
+static inline bool is_gvt_request(struct drm_i915_gem_request *req)
+{
+	return i915_gem_context_force_single_submission(req->ctx);
+}
+
 static int shadow_context_status_change(struct notifier_block *nb,
 		unsigned long action, void *data)
 {
@@ -137,7 +142,7 @@ static int shadow_context_status_change(struct notifier_block *nb,
 	struct intel_vgpu_workload *workload =
 		scheduler->current_workload[req->engine->id];
 
-	if (unlikely(!workload))
+	if (!is_gvt_request(req) || unlikely(!workload))
 		return NOTIFY_OK;
 
 	switch (action) {