From mboxrd@z Thu Jan 1 00:00:00 1970 References: <745119239ef0a715f703f8315befc79ee34d0511.camel@siemens.com> From: Philippe Gerum Subject: Re: Dovetail 5.10 - Xenomai huge page support Date: Thu, 20 Jan 2022 09:32:35 +0100 In-reply-to: <745119239ef0a715f703f8315befc79ee34d0511.camel@siemens.com> Message-ID: <87sftig62e.fsf@xenomai.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable List-Id: Discussions about the Xenomai project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Bezdeka, Florian" Cc: "xenomai@xenomai.org" , "jan.kiszka@siemens.com" "Bezdeka, Florian" writes: > On Wed, 2022-01-19 at 13:35 +0000, Bezdeka, Florian via Xenomai wrote: >> Hi all, >>=20 >> 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".=C2=A0 >>=20 >> 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. >>=20 >> 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. > [1] https://source.denx.de/Xenomai/linux-dovetail/-/commit/b0a4f4c3891949= d079aa3d65f2a56428a67e580c > >>=20 >> Best regards, >> Florian --=20 Philippe.