Re: [Xen-devel] [PATCH v5 p2 16/19] tools/libxl: arm: Use an higher value for the GIC phandle

[Julien Grall <julien.grall@xxxxxxxxxx>]

On 09/04/15 17:52, Ian Jackson wrote:
> Julien Grall writes ("Re: [Xen-devel] [PATCH v5 p2 16/19] tools/libxl: arm: 
> Use an higher value for the GIC phandle"):
>> On 09/04/15 17:17, Ian Jackson wrote:
>> I only expect people using the partial device tree in very specific use
>> case. Generic use case is not even possible with the current status of
>> non-PCI (i.e device tree) passthrough. So people control their environment.
>>
>> As I said later in patch, supporting dynamic allocation will require
>> some rework in the device tree creation for the guest.
>>
>> So I was suggesting this solution as temporary in order to not block the
>> DT passthrough.
> 
> What would happen if our assumption about the DT compiler were
> violated ?

The phandle would be present in 2 different nodes of the DT. FYI, that
may also happen if a user use 2 times the same phandle in the partial DT.

The guest may retrieve the wrong node and warn/crash depending on the
implementation.

Although, it won't impact neither Xen nor the toolstack.

Regards,

-- 
Julien Grall

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel