Re: [Xen-devel] [Draft D] Xen on ARM vITS Handling

[Julien Grall <julien.grall@xxxxxxxxxx>]

On 04/06/2015 18:55, Julien Grall wrote:

> After reading this draft, I think we can avoid to browse the Device
> Table and the ITT. As said on the previous paragraph, the pending_irq
> structure is linked to an irq_desc. In your proposal, you suggested to
> store the its_device in the irq_guest (part of irq_desc). If we make
> usage of pending_irq->desc to store the physical descriptor, we can have
> a mapping vLPI <=> pLPI. Therefore, this would resolve UI1 and AFAICT,
> the memory usage would be the same in Xen of the ITT/Device base solution.
BTW, I will suggest a pseudo-code based on your draft tomorrow. It may 
be easier to understand.
--
Julien Grall

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