Operations that read guest RAM (dump-guest-memory, memsave, pmemsave)
must refuse to run while the destination of a migration is still
receiving that RAM: during precopy it is incomplete, and during postcopy
a read faults the page in from the source. Provide a single predicate
they can share instead of open-coding the runstate and postcopy checks.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20260619101834.228432-2-den@openvz.org>