Philippe Gerum wrote: > Jan Kiszka wrote: >> Meanwhile I played with some light-weight approach to relax a thread >> that received a signal (according to do_sigwake_event). Worked, but only >> once due to a limitation (if not bug) of I-pipe x86: in __ipipe_run_isr, >> it does not handle the case that a non-root handler may alter the >> current domain, causing corruptions to the IPIPE_SYNC_FLAG states of the >> involved domains. > > It is not a bug, this is wanted. ISR must neither change the current > domain nor migrate CPU; allowing this would open Pandora's box.
And if there is no way to migrate from within an ISR, we can bury any attempt to deliver signals to spinning Xenomai threads - or what other context would remain to Xenomai for triggering migration? Jan -- Siemens AG, Corporate Technology, CT SE 2 Corporate Competence Center Embedded Linux _______________________________________________ Xenomai-core mailing list Xenomai-core@gna.org https://mail.gna.org/listinfo/xenomai-core
