drm/i915/gvt: add vreg write for GDRST handler

The emulation handler for MMIO GDRST miss vreg write in it, as result
the vreg cannot update correspondingly.

Signed-off-by: Ping Gao <ping.a.gao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>

diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
index 3e74fb3..52af517 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -258,6 +258,7 @@ static int gdrst_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
        u32 data;
        u64 bitmap = 0;
 
+       write_vreg(vgpu, offset, p_data, bytes);
        data = vgpu_vreg(vgpu, offset);
 
        if (data & GEN6_GRDOM_FULL) {