This is effectively the other "half" of what was submitted as 4.15 candidates in "[PATCH 0/4][4.15?] VT-d: mostly S3 related corrections".
1: improve save/restore of registers across S3 2: don't open-code dmar_readl() 3: bring print_qi_regs() in line with print_iommu_regs() 4: qinval indexes are only up to 19 bits wide 5: avoid pointless use of 64-bit constants 6: drop unused #define-s Jan
