Re: [PATCH 0/2] eventfd: new EFD_STATE flag

[Avi Kivity]

On 08/26/2009 08:45 PM, Davide Libenzi wrote:
> OK, if I get it correctly, there is one eventfd signaler (the device), and
> one eventfd reader (the hypervisor), right?
> Each hypervisor listens for multiple devices detecting state changes, and
> associating the eventfd "line" to the IRQ number by some configuration
> (ala PCI), right?
>    

Yes.  The PCI stuff happens in userspace, all the hypervisor sees is 
"this eventfd is IRQ 10".  There may be multiple eventfds routed to one 
IRQ (corresponding to a shared IRQ line).

--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

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