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From: "Ignacio García Pérez" <iggarpe@domain.hid>
To: xenomai@xenomai.org
Subject: [Xenomai-help] Segfault inb
Date: Wed, 06 Sep 2006 18:38:51 +0200	[thread overview]
Message-ID: <44FEF99B.5000900@domain.hid> (raw)

Hi,

There must be something very obvious I'm missing, yet I don't know why 
and I'm stuck.

I've got a very simple program that starts a simple periodic task that 
reads from port 0x281 at 2KHz. When the inb(0x281) is executed my 
program segfaults. If I comment that code, everything works fine (the 
periodic task executes as expected).

In my initialization code, I've remembered to:

iopl(3)
mlockall(MCL_CURRENT | MCL_FUTURE)
rt_misc_get_io_region

Even tried to issue the iopl(3) again from the periodic task itself. No way.

I'm using kernel 2.6.17.11 and Xenomai v2.2.2.



Regards.


             reply	other threads:[~2006-09-06 16:38 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-09-06 16:38 Ignacio García Pérez [this message]
2006-09-06 16:41 ` [Xenomai-help] Segfault inb Gilles Chanteperdrix

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