From: Philippe Gerum <rpm@xenomai.org>
To: "Bezdeka, Florian" <florian.bezdeka@siemens.com>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>,
"jan.kiszka@siemens.com" <jan.kiszka@siemens.com>
Subject: Re: Dovetail 5.10 - Xenomai huge page support
Date: Thu, 20 Jan 2022 09:30:07 +0100 [thread overview]
Message-ID: <87wniug63q.fsf@xenomai.org> (raw)
In-Reply-To: <a92cf71bb68a9e0701fcd6de46055eb7f584136a.camel@siemens.com>
"Bezdeka, Florian" <florian.bezdeka@siemens.com> writes:
> 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?
>
No limitation intended or known, however the recent change in the
Dovetail implement you mention in your next post may help addressing the
issue indeed by disabling COW for huge pages too, which was missing so
far.
--
Philippe.
prev parent reply other threads:[~2022-01-20 8:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-19 13:35 Dovetail 5.10 - Xenomai huge page support Bezdeka, Florian
2022-01-19 13:49 ` Bezdeka, Florian
2022-01-20 8:32 ` Philippe Gerum
2022-01-20 9:15 ` Bezdeka, Florian
2022-01-25 16:48 ` Jan Kiszka
2022-01-25 17:43 ` Philippe Gerum
2022-01-20 8:30 ` Philippe Gerum [this message]
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