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VT-d: per-domain IOMMU bitmap needs to have dynamic size
With no upper bound (anymore) on the number of IOMMUs, a fixed-size 64-bit map may be insufficient (systems with 40 IOMMUs have already been observed). Fixes: 27713fa ("VT-d: improve save/restore of registers across S3") Signed-off-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Release-Acked-by: Ian Jackson <iwj@xenproject.org>
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