tree d2210ec75c7dc7207a1ab1312ef6b49ee44c66e4
parent e6e1a20143625acb08a3f8ae25ec06846356d891
author Nicholas Piggin <npiggin@gmail.com> 1712306106 +1000
committer Thomas Huth <thuth@redhat.com> 1713243658 +0200

arch-run: Add a "continuous" migration option for tests

The cooperative migration protocol is very good to control precise
pre and post conditions for a migration event. However in some cases
its intrusiveness to the test program, can mask problems and make
analysis more difficult.

For example to stress test migration vs concurrent complicated
memory access, including TLB refill, ram dirtying, etc., then the
tight spin at getchar() and resumption of the workload after
migration is unhelpful.

This adds a continuous migration mode that directs the harness to
perform migrations continually. This is added to the migration
selftests, which also sees cooperative migration iterations reduced
to avoid increasing test time too much.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-ID: <20240405083539.374995-6-npiggin@gmail.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>