[RESEND PATCH 1/4] iommu/vt-d: Disable SVM in the platform when IOMMUs have inconsistencies

Some IOMMU Capabilities must be consistent for Shared Virtual Memory (SVM). Audit IOMMU Capability/Extended Capabilities and check if IOMMUs have the consistent value for features as below. When the features are not matched among IOMMUs, disable SVMs in the platform during DMAR initialization.

[PATCH 1/4] iommu/vt-d: Disable SVM in the platform when IOMMUs have inconsistencies

Some IOMMU Capabilities must be consistent for Shared Virtual Memory (SVM). Audit IOMMU Capability/Extended Capabilities and check if IOMMUs have the consistent value for features as below. When the features are not matched among IOMMUs, disable SVMs in the platform during DMAR initialization.