D23391.id.diff
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D23391.id.diff
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	Index: head/sys/x86/iommu/intel_gas.c
	===================================================================
	--- head/sys/x86/iommu/intel_gas.c
	+++ head/sys/x86/iommu/intel_gas.c
	@@ -370,6 +370,8 @@
	}
	if (entry->free_down < a->size + a->offset + DMAR_PAGE_SIZE)
	return (ENOMEM);
	+ if (entry->first >= a->common->lowaddr)
	+ return (ENOMEM);
	child = RB_LEFT(entry, rb_entry);
	if (child != NULL && 0 == dmar_gas_lowermatch(a, child))
	return (0);
	@@ -390,6 +392,8 @@
	{
	struct dmar_map_entry *child;

	+ if (entry->free_down < a->size + a->offset + DMAR_PAGE_SIZE)
	+ return (ENOMEM);
	if (entry->last < a->common->highaddr)
	return (ENOMEM);
	child = RB_LEFT(entry, rb_entry);