Re: [Xen-devel] [PATCH] [IOEMU] Fix wrong INTx for pass-through device

["Zhai, Edwin" <edwin.zhai@xxxxxxxxx>]

Regarding this patch, I think we need move the pci_read_intx up, or I 
would get compilation error with the reference in pt_irqpin_reg_init.
I have tested this path, both linux and windows can work, so Let's use 
physical PIN policy. Could you pls. send a new patch to Ian Jakson in a 
new thread, so that he can check in it after holiday without tracking 
this long discussion:)
BTW, could you pls. tell me how to assign the multiple function device 
to guest as it is? Setting the same virtual PCI slot?
Thanks,


Simon Horman wrote:
> Yes, the ability to make assignments like that is the crux
> of the multi-function work that I did earlier in the year.
> And the idea of not always using INTA was to avoid the
> performance penalty of reusing the virtual GSI.
>
>   
> > If we can't do this now, I think option A is also good. Is any
> > specific reason that we change to C? Does some specific multiple
> > function driver assumes specific pin other than INTA?
> >     
> ... so A isn't such a good option (it was before and thats what was used).
> I think that I chose C when I added multi-function because it
> avoided introducing any incompatibility for single-function pass-through.
> But at this point I think C just introduces complexity, so I now prefer B.
>
>   
> > BTW, pls. send your patch in attachment as I couldn't get it from
> > your mail:(
> >     
> Sure.
>
>   
--
best rgds,
edwin


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