From: Jan Kiszka <jan.kiszka@domain.hid>
To: adeos-main@gna.org
Cc: Xenomai-core@domain.hid
Subject: [Xenomai-core] [PATCH] i386: switch to root domain on unhandled non-root faults
Date: Mon, 05 Nov 2007 20:16:39 +0100 [thread overview]
Message-ID: <472F6C17.2070100@domain.hid> (raw)
This patch addresses the recently discovered issue that I-pipe actually
need to deal with faults over non-root domain in which the current
domain shows no interest in. Such faults could be triggered inside
copy_*_user, thus can cleanly be handled by Linux - if we only allow for
this. Currently, if debugging is on, we warn about a potential bug, and
corrupt the pipeline states otherwise.
The new approach is to unconditionally drop to root domain in such
cases, but - for debugging purposes of non-fixable faults - keep track
of the original domain and report it on oops.
Similar patches are required for other archs. Maybe I can look into
x86_64 later.
Jan
--
Siemens AG, Corporate Technology, CT SE 2
Corporate Competence Center Embedded Linux
next reply other threads:[~2007-11-05 19:16 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-05 19:16 Jan Kiszka [this message]
2007-11-05 19:23 ` [Xenomai-core] [Adeos-main] [PATCH] i386: switch to root domain on unhandled non-root faults Jan Kiszka
2007-11-05 22:28 ` Philippe Gerum
2007-11-06 6:16 ` Jan Kiszka
2007-11-06 9:01 ` Jan Kiszka
2007-11-08 13:48 ` Jan Kiszka
2007-11-08 23:31 ` Philippe Gerum
2007-11-09 13:58 ` Jan Kiszka
2007-11-09 16:46 ` Philippe Gerum
2007-11-09 17:07 ` Jan Kiszka
2007-11-09 17:31 ` Philippe Gerum
2007-11-11 18:59 ` Jan Kiszka
2007-11-13 10:28 ` Philippe Gerum
2007-11-13 17:40 ` Jan Kiszka
2007-11-19 11:59 ` Philippe Gerum
2007-11-19 12:42 ` Jan Kiszka
2007-11-13 21:32 ` Gilles Chanteperdrix
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