From: Pantelis Antoniou <panto@intracom•gr>
To: "Garcia Jérémie" <GARCIAJ@3il•fr>
Cc: linuxppc-dev@ozlabs•org
Subject: Re: Interrupt disabling design
Date: Thu, 07 Apr 2005 13:19:22 +0300 [thread overview]
Message-ID: <4255092A.5080300@intracom.gr> (raw)
In-Reply-To: <D4FDDD1349B5AC46B68FC26AD8AF42D6226B1B@exnet.3il.fr>
Garcia Jérémie wrote:
> Hi everybody,
> I'm trying to emulate a VxWorks-designed application under a linux montavista environment.
> In this application I have critical portion of code which need the interrupts disabled as below:
[snip]
>
> Is it possible to do that? Cause If I do a "cli()" call, I disable interrupts --> so, will the "sti()" call work?
> If yes, it allows me to make my own system call to use them from the user space but I'm not really sure...
>
> Tks a lot for your help
> _______________________________________________
Although it might be possible to something like that with root permissions,
I'd recommend against it.
If you want to run code with disabled interrupts, move that code in a kernel
module and disable/enable interrupts in the kernel
(still bad but acceptable).
IMHO of course.
Regards
Pantelis
next prev parent reply other threads:[~2005-04-07 10:38 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-07 10:23 Interrupt disabling design Garcia Jérémie
2005-04-07 10:19 ` Pantelis Antoniou [this message]
2005-04-07 23:58 ` Benjamin Herrenschmidt
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