On 06/27/2018 06:17 PM, Jan Kiszka wrote: > On 2018-06-27 16:12, Pintu Kumar wrote: >>> With nosmap, that particular issue should no longer occur (at least as >>> long as we can ask the kernel for this relaxation), so I suspect the >>> other effect you see now is something else. >> >> Just for the information, that issue occurred even on Beagle bone, and >> there is no smap on arm. >> However, it works on virtual box. how ? > > Does it work when you go back to Xenomai 3.0.6? Then it would be a > regression of the copy-to/from-userspace improvements done after that > release, you could start bisecting which commit introduced it. > > But I'm not sure right now if there isn't something similar to smap > (then just without a knob to turn it off) in the ARM architecture as well... >
AFAIR, use of protection domains is built in depending on a selection by the CPU support code. -- Philippe. _______________________________________________ Xenomai mailing list Xenomai@xenomai.org https://xenomai.org/mailman/listinfo/xenomai
