> On 15 Sep 2016, at 12:33, Richard Cochran <richardcoch...@gmail.com> wrote: > > On Thu, Sep 15, 2016 at 09:56:24AM +0100, Kieran Tyrrell wrote: > >> My signal delivery problem was a bug in the igb interrupt handler, >> where I was assuming I could set a new trigger time for TT0 before >> acknowledging the interrupt. Turns out I have to disable TT0, >> acknowledge the interrupt, program the new trigger time, and then >> re-enable TT0 for it to work. All timer signals are now delivered >> synchronously and reliably. > > So does this bug affect signal generation using TSINTR_TT0/1? > > If so, that should be patched right away, before adding any new > features.
I’m not sure, in the timer case it may only have been a problem when setting a new timer trigger time which has (by the time the registers were written and the interrupt acknowledged) already elapsed. I don’t have physical pins on my i210 card to attach a probe to, but I suppose this could be verified by adding debug to the interrupt handler. I’ll see if I can test this... ------------------------------------------------------------------------------ _______________________________________________ Linuxptp-devel mailing list Linuxptp-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-devel
