drm/nouveau/fb/gf100-: zero mmu debug buffers

These are used for accesses to sparse mappings, and we want reads of
such mappings to return 0.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gf100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gf100.c
index 3841ad6..a239e73 100644 (file)
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gf100.c
@@ -60,12 +60,12 @@ gf100_fb_oneinit(struct nvkm_fb *base)
        size = min(size, 0x1000);
 
        ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
-                             false, &fb->base.mmu_rd);
+                             true, &fb->base.mmu_rd);
        if (ret)
                return ret;
 
        ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
-                             false, &fb->base.mmu_wr);
+                             true, &fb->base.mmu_wr);
        if (ret)
                return ret;