D19729.id55516.diff
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D19729.id55516.diff
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	Index: head/sys/x86/iommu/busdma_dmar.c
	===================================================================
	--- head/sys/x86/iommu/busdma_dmar.c
	+++ head/sys/x86/iommu/busdma_dmar.c
	@@ -527,7 +527,8 @@
	gas_flags \|= DMAR_GM_CANSPLIT;

	error = dmar_gas_map(domain, &tag->common, size, offset,
	- DMAR_MAP_ENTRY_READ \| DMAR_MAP_ENTRY_WRITE,
	+ DMAR_MAP_ENTRY_READ \|
	+ ((flags & BUS_DMA_NOWRITE) == 0 ? DMAR_MAP_ENTRY_WRITE : 0),
	gas_flags, ma + idx, &entry);
	if (error != 0)
	break;