On Thu, 2022-01-20 at 09:32 +0100, Philippe Gerum wrote: > "Bezdeka, Florian" <[email protected]> writes: > > > On Wed, 2022-01-19 at 13:35 +0000, Bezdeka, Florian via Xenomai wrote: > > > Hi all, > > > > > > after migrating from 4.19-ipipe to 5.10-dovetail internal users are > > > reporting that they receive sporadic SIGXCPUs. The reported reason is > > > "page_fault_user". > > > > > > After disabling the huge page support in 5.10 the issue vanished. Tests > > > are still running, but we are optimistic that we found the root cause. > > > > > > Are there any known limitations to the huge page support in Xenomai / > > > Dovetail? My understanding is that huge pages are supported by Xenomai, > > > so any ideas where to look at? > > > > [1] is part of the 5.15-rebased dovetail branch but not part of the > > 5.10-rebase branch and mentions huge page handling. Could that be > > related? Maybe this patch is not 5.15 specific? > > > > It is not 5.15 specific. The same logic would apply to 5.10.
Thanks Philippe! I will give it a try! Even with huge page support disabled the problem came back. The first run was OK, starting a second run after 2h of idle triggers kind of a SIGXCPUs storm. > > > [1] > > https://source.denx.de/Xenomai/linux-dovetail/-/commit/b0a4f4c3891949d079aa3d65f2a56428a67e580c > > > > > > > > Best regards, > > > Florian > >
