drm/nouveau/fb/gf100-: bump size of mmu debug buffers to match big page size

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

drivers/gpu/drm/nouveau/nvkm/subdev/fb/gf100.c

@@ -46,10 +46,10 @@ gf100_fb_oneinit(struct nvkm_fb *base)
 {
 	struct gf100_fb *fb = gf100_fb(base);
 	struct nvkm_device *device = fb->base.subdev.device;
-	int ret, size = 0x1000;
+	int ret, size = 1 << (fb->base.page ? fb->base.page : 17);
 
 	size = nvkm_longopt(device->cfgopt, "MmuDebugBufferSize", size);
-	size = min(size, 0x1000);
+	size = max(size, 0x1000);
 
 	ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
 			      true, &fb->base.mmu_rd);

drivers/gpu/drm/nouveau/nvkm/subdev/fb/gp100.c

@@ -48,7 +48,7 @@ gp100_fb_init(struct nvkm_fb *base)
 	nvkm_wr32(device, 0x100cc8, nvkm_memory_addr(fb->base.mmu_wr) >> 8);
 	nvkm_wr32(device, 0x100ccc, nvkm_memory_addr(fb->base.mmu_rd) >> 8);
 	nvkm_mask(device, 0x100cc4, 0x00060000,
-		  max(nvkm_memory_size(fb->base.mmu_rd) >> 16, (u64)2) << 17);
+		  min(nvkm_memory_size(fb->base.mmu_rd) >> 16, (u64)2) << 17);
 }
 
 static const struct nvkm_fb_func