Re: [RFC PATCH 0/4] ARM: KVM: Enable the ioeventfd capability of KVM on ARM

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On 13 March 2014 15:57, Antonios Motakis
<a.motakis@xxxxxxxxxxxxxxxxxxxxxx> wrote:
> (3) Implement routing support for the VGIC and using the VGIC via irqchip.c.
>
> Assuming support for a GIC with Cortex-A15 CPUs, we can refer to the A15 TRM

Don't assume A15, please. The API should be based on the GIC
architectural specifications, not on a particular implementation
(especially when we already have multiple implementations
supported!) Notice that the IRQ_LINE API that you quote does
this -- we leave at least enough space for the architectural
maximums, not merely the A15's maximums.

It would also be helpful if you could explain what the
IRQ routing API you're proposing is -- the KVM api.txt
is extremely x86 specific in this area and it's not
clear to me what "IRQ routing" means for ARM...

thanks
-- PMM
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