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DateSun, 11 Dec 2005 11:58:44 +0100
FromIngo Molnar <>
SubjectRe: IRQ vector assignment for system call exception
* 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
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