Doug Moore 87d405eab9 iommu_gas: initialize start_gap as first node ... In iommu_gas.c, domain->start_gap points to one of the nodes on either side of the first free, unallocated range. In iommu_gas_init_domain, it is initialized to point to the node after the single free range. Change it to point to the node before that free range, so that, when 'lowaddr' is within the initial free range, the first allocation search for free space below 'lowaddr' does not begin and end at an address above 'lowaddr'. This fixes problems on a machine with Intel DMAR enabled. Reported by: jah Reviewed by: dougm Tested by: jah Obtained from: jah Fixes: commit db151ca0c3 iommu_gas: start space search from 1st free space MFC after: 1 day		2023-02-08 11:04:13 -06:00
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busdma_iommu.c	kmem_malloc/free: Use void * instead of vm_offset_t for kernel pointers.	2022-09-22 15:09:19 -07:00
busdma_iommu.h	busdma_iommu: Fine-grained locking for the dmamap's map list	2022-06-25 00:59:23 -05:00
iommu_gas.c	iommu_gas: initialize start_gap as first node	2023-02-08 11:04:13 -06:00
iommu_gas.h	iommu_gas: add iommu_gas_remove()	2022-08-15 17:54:57 +03:00
iommu_msi.h
iommu_types.h	Remove "All Rights Reserved" from FreeBSD Foundation sys/ copyrights	2021-08-08 10:42:24 -04:00
iommu.h	iommu_gas: start space search from 1st free space	2022-10-29 00:50:44 -05:00