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Julien Grall authored
Some IOMMU don't suppport coherent PT walk. When the p2m is shared with the CPU, Xen has to make sure the PT changes have reached the memory. Introduce new IOMMU function that will check if the IOMMU feature is enabled for a specified domain. On ARM, the platform can contain multiple IOMMUs. Each of them may not have the same set of feature. The domain parameter will be used to get the set of features for IOMMUs used by this domain. Signed-off-by: Julien Grall <julien.grall@linaro.org> Acked-by: Jan Beulich <jbeulich@suse.com> Acked-by: Ian Campbell <ian.campbell@citrix.com>
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