From: Ukil a <ukil_a@yahoo.com>
To: linux-kernel@vger.kernel.org
Subject: Need help in understanding x86 syscall
Date: Wed, 10 Aug 2005 22:39:31 -0700 (PDT) [thread overview]
Message-ID: <20050811053931.71120.qmail@web51604.mail.yahoo.com> (raw)
I had this question. As per my understanding, in the
Linux system call implementation on x86 architecture
the call flows like this int 0x80 -> syscall ->
sys_call_vector(taken from the table)-> return from
interrupt service routine.
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)? That’s appears to be too long for
the scheduling or other interrupts to be blocked?
Am I missing something here?
Thanks
Ukil
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next reply other threads:[~2005-08-11 5:39 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-11 5:39 Ukil a [this message]
2005-08-11 13:54 ` Steven Rostedt
2005-08-11 15:52 ` Zachary Amsden
[not found] <4Ae73-6Mm-5@gated-at.bofh.it>
2005-08-11 13:41 ` Bodo Eggert
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
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