winsys/radeon: clamp vram_vis_size to 256MB

the value from the kernel is wrong

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
index 278d4f3..a8da62f 100644 (file)
--- a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
@@ -372,7 +372,7 @@ static bool do_winsys_init(struct radeon_drm_winsys *ws)
     }
     ws->info.gart_size = gem_info.gart_size;
     ws->info.vram_size = gem_info.vram_size;
-    ws->info.vram_vis_size = gem_info.vram_visible;
+    ws->info.vram_vis_size = MIN2(gem_info.vram_visible, 256*1024*1024);
 
     /* Radeon allocates all buffers as contigous, which makes large allocations
      * unlikely to succeed. */