commit 5462da85cf9200a7622a699fb8dd0eed00231af9
Author: Nicolai Hähnle <nicolai.haehnle@amd.com>
Date:   Tue Jun 27 09:50:32 2017 +0200

    winsys/radeon: only call pb_slabs_reclaim when slabs are actually used
    
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100242
    Fixes: fb827c055cb1 ("winsys/radeon: enable buffer allocation from slabs")
    Cc: mesa-stable@lists.freedesktop.org

diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_bo.c b/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
index 9bbf1b3..2700c6f 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
@@ -1020,21 +1020,22 @@ no_slab:
 
     bo = radeon_bo(pb_cache_reclaim_buffer(&ws->bo_cache, size, alignment,
                                            usage, pb_cache_bucket));
     if (bo)
         return &bo->base;
 
     bo = radeon_create_bo(ws, size, alignment, usage, domain, flags,
                           pb_cache_bucket);
     if (!bo) {
         /* Clear the cache and try again. */
-        pb_slabs_reclaim(&ws->bo_slabs);
+        if (ws->info.has_virtual_memory)
+            pb_slabs_reclaim(&ws->bo_slabs);
         pb_cache_release_all_buffers(&ws->bo_cache);
         bo = radeon_create_bo(ws, size, alignment, usage, domain, flags,
                               pb_cache_bucket);
         if (!bo)
             return NULL;
     }
 
     bo->u.real.use_reusable_pool = true;
 
     mtx_lock(&ws->bo_handles_mutex);