From: Ingo Molnar <mingo@elte.hu>
To: Arjan van de Ven <arjan@infradead.org>
Cc: Gaurav Dhiman <gaurav4lkg@gmail.com>,
yen <yen@eos.cs.nthu.edu.tw>,
linux-kernel@vger.kernel.org
Subject: Re: IRQ vector assignment for system call exception
Date: Sun, 11 Dec 2005 11:58:44 +0100 [thread overview]
Message-ID: <20051211105844.GA4085@elte.hu> (raw)
In-Reply-To: <1134238271.2828.19.camel@laptopd505.fenrus.org>
* Arjan van de Ven <arjan@infradead.org> wrote:
> On Sat, 2005-12-10 at 18:50 +0530, Gaurav Dhiman wrote:
> > yes, definetely a historical reason. System libraries need to know
> > this vector to invoke system call.
>
> nowadays it's also mostly unused; sysenter and friends are used
> instead and they don't use this entry point.
note that some system-calls are still invoked via int80 by glibc, such
as fork() - even on sysenter/syscall capable CPUs.
Ingo
next prev parent reply other threads:[~2005-12-11 10:59 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-08 8:10 IRQ vector assignment for system call exception yen
2005-12-08 9:22 ` Coywolf Qi Hunt
2005-12-08 13:26 ` linux-os (Dick Johnson)
2005-12-10 13:20 ` Gaurav Dhiman
2005-12-10 18:11 ` Arjan van de Ven
2005-12-11 10:58 ` Ingo Molnar [this message]
2005-12-15 22:50 ` Jan Engelhardt
2005-12-15 23:16 ` Arjan van de Ven
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