[PATCHv2 09/11] powerpc/kvm: Outline of KVM-HV HPT resizing implementation

This adds a not yet working outline of the HPT resizing PAPR extension. Specifically it adds the necessary ioctl() functions, their basic steps, the work function which will handle preparation for the resize, and synchronization between these, the guest page fault path and guest HPT update path.

[PATCHv2 09/11] powerpc/kvm: Outline of KVM-HV HPT resizing implementation

This adds a not yet working outline of the HPT resizing PAPR extension. Specifically it adds the necessary ioctl() functions, their basic steps, the work function which will handle preparation for the resize, and synchronization between these, the guest page fault path and guest HPT update path.