s390x/pci: fix failures of dma map/unmap
In commit d78c19b5cf
, vfio code stores
the IOMMU's offset_within_address_space and adjusts the IOVA before
calling vfio_dma_map/vfio_dma_unmap. But s390_translate_iommu already
considers the base address of an IOMMU memory region.
Thus we use pal as the size and 0x0 as the base address to initialize
IOMMU memory subregion.
Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
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parent
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@ -498,11 +498,9 @@ static const MemoryRegionOps s390_msi_ctrl_ops = {
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void s390_pci_iommu_enable(S390PCIBusDevice *pbdev)
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{
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uint64_t size = pbdev->pal - pbdev->pba + 1;
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memory_region_init_iommu(&pbdev->iommu_mr, OBJECT(&pbdev->mr),
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&s390_iommu_ops, "iommu-s390", size);
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memory_region_add_subregion(&pbdev->mr, pbdev->pba, &pbdev->iommu_mr);
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&s390_iommu_ops, "iommu-s390", pbdev->pal + 1);
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memory_region_add_subregion(&pbdev->mr, 0, &pbdev->iommu_mr);
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pbdev->iommu_enabled = true;
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}
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