From: Jan Kiszka <jan.kiszka@domain.hid>
To: Jeff Weber <jweber@domain.hid>
Cc: Xenomai Help <xenomai@xenomai.org>
Subject: Re: [Xenomai-help] enable/disable all interrupts from user space
Date: Fri, 27 Oct 2006 15:32:34 +0200 [thread overview]
Message-ID: <45420A72.8000700@domain.hid> (raw)
In-Reply-To: <200610261639.36013.jweber@domain.hid>
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Jeff Weber wrote:
> How do I enable/disable all interrupts (Linux and Xenomai) from user space?
> (native skin preferred)
For x86:
iopl(3);
__asm__ __volatile__("cli/sti");
Ugly hack, typical a sign that something should be moved somewhere
else... (there are a few exceptions, though)
We once had some discussion if we shouldn't export domain stalling
features to user-space in order to support things like X-servers that
currently come with such code, toasting any RT kernel. May come one day,
but this will be primarily for legacy non-RT code.
Jan
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next prev parent reply other threads:[~2006-10-27 13:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-26 21:39 [Xenomai-help] enable/disable all interrupts from user space Jeff Weber
2006-10-27 13:32 ` Jan Kiszka [this message]
2006-10-27 16:08 ` Jeff Weber
2006-10-27 16:24 ` Jan Kiszka
2006-10-27 21:11 ` Philippe Gerum
2006-10-27 21:31 ` Jan Kiszka
2006-10-27 22:03 ` Philippe Gerum
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