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From: Bodo Eggert <harvested.in.lkml@posting.7eggert.dyndns.org>
To: Ukil a <ukil_a@yahoo.com>, linux-kernel@vger.kernel.org
Subject: Re: Need help in understanding  x86  syscall
Date: Thu, 11 Aug 2005 15:41:57 +0200	[thread overview]
Message-ID: <E1E3DJm-0000jy-0B@be1.lrz> (raw)
In-Reply-To: <4Ae73-6Mm-5@gated-at.bofh.it>

Ukil a <ukil_a@yahoo.com> wrote:

> Now I had the doubt that if the the syscall
> implementation is very large will the scheduling and
> other interrupts be blocked for the whole time till
> the process returns from the ISR (because in an ISR by
> default the interrupts are disabled unless “sti” is
> called explicitly)?

According to my documentation it isn't. A software interrupt is a far call
with an extra pushf, and a hardware interrupt is protected against recursion
by the PIC, not by an interrupt flag.
-- 
Ich danke GMX dafür, die Verwendung meiner Adressen mittels per SPF
verbreiteten Lügen zu sabotieren.

       reply	other threads:[~2005-08-11 13:42 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <4Ae73-6Mm-5@gated-at.bofh.it>
2005-08-11 13:41 ` Bodo Eggert [this message]
2005-08-11 14:04   ` linux-os (Dick Johnson)
2005-08-11 14:31     ` Steven Rostedt
2005-08-11 15:13       ` Coywolf Qi Hunt
2005-08-11 15:22         ` Steven Rostedt
2005-08-11 15:28         ` linux-os (Dick Johnson)
2005-08-11 15:51           ` Steven Rostedt
2005-08-11 16:19             ` Steven Rostedt
2005-08-11 16:31               ` Coywolf Qi Hunt
2005-08-11 16:59                 ` Coywolf Qi Hunt
2005-08-11 17:10                   ` linux-os (Dick Johnson)
2005-08-11 17:26                     ` Steven Rostedt
2005-08-11 17:33                       ` Steven Rostedt
2005-08-11 17:57                         ` linux-os (Dick Johnson)
2005-08-11 17:59                         ` Zachary Amsden
2005-08-11 18:17                           ` Steven Rostedt
2005-08-11 19:58                             ` Zachary Amsden
2005-08-11 20:04                               ` Steven Rostedt
2005-08-12 19:30                           ` Jan Engelhardt
2005-08-11 17:46                       ` linux-os (Dick Johnson)
2005-08-11 18:11                         ` Steven Rostedt
2005-08-11 18:21                           ` linux-os (Dick Johnson)
2005-08-11 19:00                             ` Steven Rostedt
2005-08-11 20:39                           ` Zwane Mwaikambo
2005-08-12 11:29                             ` Bodo Eggert
2005-08-11 17:18                   ` Steven Rostedt
2005-08-12  5:04                     ` Jeff Carr
2005-08-12  5:30                       ` Coywolf Qi Hunt
2005-08-12 10:34                       ` Steven Rostedt
2005-08-12 10:40                       ` Steven Rostedt
2005-08-11 14:05   ` Steven Rostedt
2005-08-11 23:25     ` Bodo Eggert
2005-08-11  5:39 Ukil a
2005-08-11 13:54 ` Steven Rostedt
2005-08-11 15:52 ` Zachary Amsden

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