display: add memory_region_sync_dirty_bitmap calls

These are strictly speaking only needed for KVM and Xen, but it's still
nice to be consistent.

Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

hw/display/cg3.c

@@ -106,6 +106,7 @@ static void cg3_update_display(void *opaque)
     pix = memory_region_get_ram_ptr(&s->vram_mem);
     data = (uint32_t *)surface_data(surface);
 
+    memory_region_sync_dirty_bitmap(&s->vram_mem);
     for (y = 0; y < height; y++) {
         int update = s->full_update;
 

hw/display/g364fb.c

@@ -260,6 +260,7 @@ static void g364fb_update_display(void *opaque)
         qemu_console_resize(s->con, s->width, s->height);
     }
 
+    memory_region_sync_dirty_bitmap(&s->mem_vram);
     if (s->ctla & CTLA_FORCE_BLANK) {
         g364fb_draw_blank(s);
     } else if (s->depth == 8) {

hw/display/sm501.c

@@ -1322,6 +1322,7 @@ static void sm501_draw_crt(SM501State * s)
     }
 
     /* draw each line according to conditions */
+    memory_region_sync_dirty_bitmap(&s->local_mem_region);
     for (y = 0; y < height; y++) {
 	int update_hwc = draw_hwc_line ? within_hwc_y_range(s, y, 1) : 0;
 	int update = full_update || update_hwc;

hw/display/tcx.c

@@ -353,6 +353,7 @@ static void tcx_update_display(void *opaque)
         return;
     }
 
+    memory_region_sync_dirty_bitmap(&ts->vram_mem);
     for (y = 0; y < ts->height; page += TARGET_PAGE_SIZE) {
         if (memory_region_get_dirty(&ts->vram_mem, page, TARGET_PAGE_SIZE,
                                     DIRTY_MEMORY_VGA)) {
@@ -446,6 +447,7 @@ static void tcx24_update_display(void *opaque)
     dd = surface_stride(surface);
     ds = 1024;
 
+    memory_region_sync_dirty_bitmap(&ts->vram_mem);
     for (y = 0; y < ts->height; page += TARGET_PAGE_SIZE,
             page24 += TARGET_PAGE_SIZE, cpage += TARGET_PAGE_SIZE) {
         if (tcx24_check_dirty(ts, page, page24, cpage)) {