Re: [Xen-devel] [RFC PATCH v1 02/10] xen/arm: register mmio handler at runtime

[Vijay Kilari <vijay.kilari@xxxxxxxxx>]

Hi Julien,


On Fri, Mar 21, 2014 at 10:53 PM, Julien Grall <julien.grall@xxxxxxxxxx> wrote:
> On 03/21/2014 05:17 PM, Ian Campbell wrote:
>> On Wed, 2014-03-19 at 19:47 +0530, vijay.kilari@xxxxxxxxx wrote:
>>> From: Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxxxxxxxxxx>
>>>
>>> mmio handlers are registers at compile time
>>> for drivers like vuart and vgic.
>>> Make mmio handler registered at runtime by
>>> creating linked list of mmio handlers
>>
>> I'm not convinced of the need for this, certainly the vgic side can just
>> demux into v2 or v3 as necessary.
>
> Demux the code just add an indirection. We could have a list of mmio
> handler per domain and rely on it to call the right handler. A bit like x86.
>
 Until Andrii adds IOMMU  handling should keep this patch? and adopt
to it later?
  Also vgic & vuart are not per domain specific

> Regards,
>
> --
> Julien Grall

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