[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [xen master] xen/arm: don't pass iommu properties to hwdom for iommu-map
commit a236b74b961faa045640275605e319bba45483c1 Author: Stewart Hildebrand <stewart.hildebrand@xxxxxxx> AuthorDate: Thu Nov 9 13:27:04 2023 -0500 Commit: Julien Grall <jgrall@xxxxxxxxxx> CommitDate: Wed Dec 13 10:40:00 2023 +0000 xen/arm: don't pass iommu properties to hwdom for iommu-map A device tree node for a PCIe root controller may have an iommu-map property [1] with a phandle reference to the SMMU node, but not necessarily an iommus property. In this case, we want to treat it the same as we currently handle devices with an iommus property: don't pass the iommu related properties to hwdom. [1] https://www.kernel.org/doc/Documentation/devicetree/bindings/pci/pci-iommu.txt Reported-by: Michal Orzel <michal.orzel@xxxxxxx> Signed-off-by: Stewart Hildebrand <stewart.hildebrand@xxxxxxx> Acked-by: Julien Grall <jgrall@xxxxxxxxxx> --- xen/arch/arm/domain_build.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index 613b2885ce..6945b9755d 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -550,6 +550,8 @@ static int __init write_properties(struct domain *d, struct kernel_info *kinfo, * should be skipped. */ iommu_node = dt_parse_phandle(node, "iommus", 0); + if ( !iommu_node ) + iommu_node = dt_parse_phandle(node, "iommu-map", 1); if ( iommu_node && device_get_class(iommu_node) != DEVICE_IOMMU ) iommu_node = NULL; -- generated by git-patchbot for /home/xen/git/xen.git#master
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