This patch reworks libvmmapi to provide support for emulating NUMA
domains in guests.
More specifically, it reworks 'vm_setup_memory' to setup system memory
segments for each guest NUMA domain.
An emulated NUMA domain is described by a 'struct vmdom' in vmmapi.h.
Aside from its size in bytes, each domain can be configured to use a
specific domainset(9) policy and domain mask.
'vm_setup_memory' now takes two additional arguments - an array of
struct vmdoms and the array's size. It then proceeds to set up a memory
segment for each specified domain using the existing memory mapping
scheme. If no domain info is passed, the memory setup falls back to
the original, non-NUMA behaviour.
Differential Revision: https://reviews.freebsd.org/D44566
Reviewed by: markj
Bojan Novković
08c7dd2fbe