Re: RFC Proposal to enable MSI support in Linux kernel

[Jeff Garzik (jgarzik@pobox.com)]

Zwane Mwaikambo wrote:
> On Wed, 28 May 2003, Jeff Garzik wrote:
> > A bigger question though:  if platform_legacy_irq() returns zero, will 
> > the handler _ever_ be edge-triggered?
>
>
> Good question, i wouldn't think so, that would collapse that section into 
> two lines.


Have you ever seen an edge-triggered interrupt on x86 that would fail 
the current platform_legacy_irq test?  For what cases does that happen? 
 The legacy interrupts on the boxes I poked at are edge triggered, but 
I do not know enough to say if that is a general rule.

	Jeff



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