>> between RTdevices and non-RT devices crash the system? And whether I >> understand correctly that later versions (2.4 up?) of xenomai do not >> have the problem of the freezing system at least.? > > Since Xenomai 2.3, actually, no system is supposed to "crash" anymore > when IRQ conflicts between the domains arise. But if you loose, e.g., > your USB keyboard or your serial console or whatever input device due to > a conflict, you may get the impression of a crash. However, if anyone > suspects that something else happens on his system, please report the > findings to the Xenomai mailing list!
The systems I have found to "crash" all used PS/2 input device and normal VGA monitor. Generally a freeze is initiated by some grafical action in X after starting rtnet. dmesg will tell me that there is a shared IRQ, and in some cases it will disable it. In the latter case the system does not freeze but I still have to find another IRQ address. When there is a shared interrupt then there might be a freeze. If it does not freeze immediately it never freezes and the shared IRQ is no problem. For a while I thought there was only a problem with the VGA device and the rtnet card so if I kept those two off the same IRQ there would be no problem. On other machines this theory was brutally smashed. Sorry I cannot be more specific here since all problems in the end are "solved". Hmm, I am just considering that since I use live linux it may be that the conflict was between the rtnet card and a USBport that gives access to the usbstick(s). But my question remains -purely out of interest- why non-rt devices and rt devices can _fundamentally_ not share an IRQ? kind regards, Roland. > > Jan > _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
