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Special care needs to be taken in ensuring locks are in a consistent state across fork events. Add helpers so the plugin system can ensure that. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Fixes: https://gitlab.com/qemu-project/qemu/-/issues/358 Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Tested-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20221004115221.2174499-1-alex.bennee@linaro.org>