[PATCH 4.6 090/203] iommu/vt-d: Enable QI on all IOMMUs before setting root entry

4.6-stable review patch. If anyone has any objections, please let me know. -- From: Joerg Roedel commit a4c34ff1c029e90e7d5f8dd8d29b0a93b31c3cb2 upstream. This seems to be required on some X58 chipsets on systems with more than one IOMMU. QI does not work

[PATCH 4.6 090/203] iommu/vt-d: Enable QI on all IOMMUs before setting root entry

4.6-stable review patch. If anyone has any objections, please let me know. -- From: Joerg Roedel commit a4c34ff1c029e90e7d5f8dd8d29b0a93b31c3cb2 upstream. This seems to be required on some X58 chipsets on systems with more than one IOMMU. QI does not work until it is enabled