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xen-devel
Re: [Xen-devel] Interrupt forwarding
On Monday 14 March 2005 15:39, Ronald G. Minnich wrote:
> On Sat, 12 Mar 2005, Mark Williamson wrote:
> > I believe this problem is eliminated under PCI express, since interrupts
> > are message-based.
>
> I got corrected on this in the openib mailing list :-)
>
> the message signalled interrupts are even available on older hardware, it
> seems; sometimes but not always.
I'd seen they're available on some non-PCIE hardware. I assumed it was just
recent / high end hardware (maybe just on PCI-X). (for instance, I think my
workstation at Intel does use MSI interrupts and IIRC has PCI / PCI-X
support).
Does anyone know to what extent MSI is actually used these days?
> That doesn't help much but it is interesting ...
Interesting indeed...
Cheers,
Mark
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