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intel-iommu: Only avoid flushing device IOTLB for domain ID 0 in cach…
…ing mode In caching mode, domain ID 0 is reserved for non-present to present mapping flush. Device IOTLB doesn't need to be flushed in this case. Previously we were avoiding the flush for domain zero, even if the IOMMU wasn't in caching mode and domain zero wasn't special. Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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