[PATCH v2 00/12] x86/p2m: restrict more code to build just for HVM

[Jan Beulich <jbeulich@xxxxxxxx>]

Since it was brought up in the discussion of v1: I think the end
goal is to be for mm/p2m.c to become a HVM-only file. Any "wrappers"
also trying to take care of !paging_mode_translate() guests ought to
be moved elsewhere. To see what actually still needs taking care of,
incrementally extending the #ifdef CONFIG_HVM regions there is the
way to go imo.

Compared to v1 there are many new patches here plus build fixes to
two of the three remaining ones from v1.

01: p2m: set_{foreign,mmio}_p2m_entry() are HVM-only
02: p2m: {,un}map_mmio_regions() are HVM-only
03: mm: the gva_to_gfn() hook is HVM-only
04: AMD/IOMMU: guest IOMMU support is for HVM only
05: p2m: change_entry_type_* hooks are HVM-only
06: p2m: hardware-log-dirty related hooks are HVM-only
07: p2m: the recalc hook is HVM-only
08: mem-access is HVM-only
09: make mem-paging configuarable and default it to off for being unsupported
10: p2m: {get,set}_entry hooks and p2m-pt.c are HVM-only
11: p2m: write_p2m_entry_{pre,post} hooks are HVM-only
12: p2m: re-arrange struct p2m_domain

Jan