g364fb: switch to using DirtyBitmapSnapshot

This removes the last user of memory_region_test_and_clear_dirty
outside memory.c.
Tested-by: NHervé Poussineau <hpoussin@reactos.org>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

hw/display/g364fb.c

@@ -62,15 +62,15 @@ typedef struct G364State {
 
 #define G364_PAGE_SIZE 4096
 
-static inline int check_dirty(G364State *s, ram_addr_t page)
+static inline int check_dirty(G364State *s, DirtyBitmapSnapshot *snap, ram_addr_t page)
 {
-    return memory_region_test_and_clear_dirty(&s->mem_vram, page, G364_PAGE_SIZE,
-                                              DIRTY_MEMORY_VGA);
+    return memory_region_snapshot_get_dirty(&s->mem_vram, snap, page, G364_PAGE_SIZE);
 }
 
 static void g364fb_draw_graphic8(G364State *s)
 {
     DisplaySurface *surface = qemu_console_surface(s->con);
+    DirtyBitmapSnapshot *snap;
     int i, w;
     uint8_t *vram;
     uint8_t *data_display, *dd;
@@ -122,8 +122,10 @@ static void g364fb_draw_graphic8(G364State *s)
     vram = s->vram + s->top_of_screen;
     /* XXX: out of range in vram? */
     data_display = dd = surface_data(surface);
+    snap = memory_region_snapshot_and_clear_dirty(&s->mem_vram, 0, s->vram_size,
+                                                  DIRTY_MEMORY_VGA);
     while (y < s->height) {
-        if (check_dirty(s, page)) {
+        if (check_dirty(s, snap, page)) {
             if (y < ymin)
                 ymin = ymax = y;
             if (x < xmin)