drm/i915/gvt: Fix alignment for GTT allocation

We need to properly setup alignment for GTT start/end/size
as required. Fixed warning from i915 gem.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>

drivers/gpu/drm/i915/gvt/aperture_gm.c

@@ -49,20 +49,21 @@ static int alloc_gm(struct intel_vgpu *vgpu, bool high_gm)
 	if (high_gm) {
 		node = &vgpu->gm.high_gm_node;
 		size = vgpu_hidden_sz(vgpu);
-		start = gvt_hidden_gmadr_base(gvt);
-		end = gvt_hidden_gmadr_end(gvt);
+		start = ALIGN(gvt_hidden_gmadr_base(gvt), I915_GTT_PAGE_SIZE);
+		end = ALIGN(gvt_hidden_gmadr_end(gvt), I915_GTT_PAGE_SIZE);
 		flags = PIN_HIGH;
 	} else {
 		node = &vgpu->gm.low_gm_node;
 		size = vgpu_aperture_sz(vgpu);
-		start = gvt_aperture_gmadr_base(gvt);
-		end = gvt_aperture_gmadr_end(gvt);
+		start = ALIGN(gvt_aperture_gmadr_base(gvt), I915_GTT_PAGE_SIZE);
+		end = ALIGN(gvt_aperture_gmadr_end(gvt), I915_GTT_PAGE_SIZE);
 		flags = PIN_MAPPABLE;
 	}
 
 	mutex_lock(&dev_priv->drm.struct_mutex);
 	ret = i915_gem_gtt_insert(&dev_priv->ggtt.base, node,
-				  size, 4096, I915_COLOR_UNEVICTABLE,
+				  size, I915_GTT_PAGE_SIZE,
+				  I915_COLOR_UNEVICTABLE,
 				  start, end, flags);
 	mutex_unlock(&dev_priv->drm.struct_mutex);
 	if (ret)
@@ -254,7 +255,7 @@ static int alloc_resource(struct intel_vgpu *vgpu,
 	if (request > avail)
 		goto no_enough_resource;
 
-	vgpu_aperture_sz(vgpu) = request;
+	vgpu_aperture_sz(vgpu) = ALIGN(request, I915_GTT_PAGE_SIZE);
 
 	item = "high GM space";
 	max = gvt_hidden_sz(gvt) - HOST_HIGH_GM_SIZE;
@@ -265,7 +266,7 @@ static int alloc_resource(struct intel_vgpu *vgpu,
 	if (request > avail)
 		goto no_enough_resource;
 
-	vgpu_hidden_sz(vgpu) = request;
+	vgpu_hidden_sz(vgpu) = ALIGN(request, I915_GTT_PAGE_SIZE);
 
 	item = "fence";
 	max = gvt_fence_sz(gvt) - HOST_FENCE;