diff -up mesa-21.1.1/src/gallium/frontends/lavapipe/lvp_device.c.dma mesa-21.1.1/src/gallium/frontends/lavapipe/lvp_device.c
--- mesa-21.1.1/src/gallium/frontends/lavapipe/lvp_device.c.dma	2021-05-20 13:08:02.207217380 +1000
+++ mesa-21.1.1/src/gallium/frontends/lavapipe/lvp_device.c	2021-05-20 13:08:35.868127094 +1000
@@ -224,6 +224,9 @@ VKAPI_ATTR VkResult VKAPI_CALL lvp_Creat
    if (pAllocator == NULL)
       pAllocator = &default_alloc;
 
+   if (!getenv("RH_SW_VULKAN"))
+      return VK_ERROR_INITIALIZATION_FAILED;
+
    instance = vk_zalloc(pAllocator, sizeof(*instance), 8,
                         VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
    if (!instance)