iommu/vt-d: Gracefully handle DMAR units with no supported address widths
Instead of bailing out completely, such a unit can still be used for interrupt remapping. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Link: https://lore.kernel.org/linux-iommu/549928db2de6532117f36c9c810373c14cf76f51.camel@infradead.org/ Signed-off-by: Joerg Roedel <jroedel@suse.de>
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