nixpkgs/pkgs/os-specific/linux/nvidia-x11/fix_missing_symbol.patch

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https://devtalk.nvidia.com/default/topic/1030082/linux/kernel-4-16-rc1-breaks-latest-drivers-unknown-symbol-swiotlb_map_sg_attrs-/
--- a/kernel/common/inc/nv-linux.h~ 2018-01-25 06:09:41.000000000 +0100
+++ b/kernel/common/inc/nv-linux.h 2018-03-05 13:58:17.746725638 +0100
@@ -1209,6 +1209,7 @@ static inline NvU32 nv_alloc_init_flags(
static inline NvBool nv_dma_maps_swiotlb(struct pci_dev *dev)
{
NvBool swiotlb_in_use = NV_FALSE;
+#if 0
#if defined(CONFIG_SWIOTLB)
#if defined(NV_DMA_OPS_PRESENT) || defined(NV_GET_DMA_OPS_PRESENT)
/*
@@ -1251,7 +1252,7 @@ static inline NvBool nv_dma_maps_swiotlb
swiotlb_in_use = (swiotlb == 1);
#endif
#endif
-
+#endif
return swiotlb_in_use;
}