Update _PAGE_DIRTY to _PAGE_DIRTY_BITS in split_2MB_gtt_entry().

In order to support Control-flow Enforcement (CET), _PAGE_DIRTY is
now _PAGE_DIRTY_HW or _PAGE_DIRTY_SW.

Signed-off-by: Yu-cheng Yu <yu-cheng...@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 4b04af569c05..e467ca182633 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -1201,7 +1201,7 @@ static int split_2MB_gtt_entry(struct intel_vgpu *vgpu,
        }
 
        /* Clear dirty field. */
-       se->val64 &= ~_PAGE_DIRTY;
+       se->val64 &= ~_PAGE_DIRTY_BITS;
 
        ops->clear_pse(se);
        ops->clear_ips(se);
-- 
2.17.1

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