RE: Interrupt Sharing

[Mohamed Ghouse , Gurgaon]

But what if two PCI Devices are sharing the same interrupt line?
Then how does the handler handle this?
Can you please explain this handling by the Kernel?

-MG

> -----Original Message-----
> From: Robert Love [mailto:[e-mail]]
> Sent: Wednesday, September 25, 2002 2:55 AM
> To: Mohamed "Ghouse , Gurgaon
> Cc: Linux-Kernel (E-mail)
> Subject: Re: Interrupt Sharing
> 
> 
> On Tue, 2002-09-24 at 17:19, Mohamed Ghouse , Gurgaon wrote:
> 
> > Let me Re-Phrase the Question
> > The PCI Interrupts are shareable. How does the Operating 
> System(Linux)
> > implement this?
> 
> It does not have to do anything special, actually.  If 
> interrupt n comes
> in, then each handler registered on interrupt n is run.
> 
> The incorrect handlers should check for work to do, see none, and
> return.  The correct one will actually run.
> 
> 	Robert Love
>