[PATCH 0/6] VT-d: assorted cleanup

[Jan Beulich <jbeulich@xxxxxxxx>]

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