[PATCH v2 0/2] grant table and add-to-physmap adjustments on top of XSAs 379 and 384

[Jan Beulich]

The original 1st patch has meanwhile gone in, but the adjustment requested
for patch 2 required a new prereq patch.

1: mm: introduce INVALID_{G,M}FN_RAW
2: memory: XENMEM_add_to_physmap (almost) wrapping checks

Jan