feat: aarch64 port - Raspberry Pi 4/400 SD boot (SDHCI, ext2 root + first-boot grow), USB hubs, PCI INTx routing, SMP, DMA fences

programs/src/login/login_render.cpp

@@ -124,7 +124,7 @@ void draw_login_screen(LoginState* ls) {
     Canvas c(target, sw, sh);
 
     // ==== Background ====
-    if (ls->has_wallpaper && ls->bg_wallpaper) {
+    if (__atomic_load_n(&ls->has_wallpaper, __ATOMIC_ACQUIRE) && ls->bg_wallpaper) {
         montauk::memcpy(target, ls->bg_wallpaper,
                         (uint64_t)sw * sh * sizeof(uint32_t));
     } else {