[PATCH v4 05/28] vfio: powerpc/spapr: Move locked_vm accounting to helpers

There moves locked pages accounting to helpers. Later they will be reused for Dynamic DMA windows (DDW). This reworks debug messages to show the current value and the limit. This stores the locked pages number in the container so when unlocking the iommu table pointer won't be needed. This does

[PATCH v4 05/28] vfio: powerpc/spapr: Move locked_vm accounting to helpers

There moves locked pages accounting to helpers. Later they will be reused for Dynamic DMA windows (DDW). This reworks debug messages to show the current value and the limit. This stores the locked pages number in the container so when unlocking the iommu table pointer won't be needed. This does