Re: [Xen-devel] [PATCH v3 08/13] xen/passthrough: iommu: Basic support of device tree assignment

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi Ian,

On 03/18/2014 04:33 PM, Ian Campbell wrote:
> On Tue, 2014-03-11 at 15:49 +0000, Julien Grall wrote:
>> Add IOMMU helpers to support device tree assignment/deassignment. This patch
>> introduces 2 new fields in the dt_device_node:
>>     - is_protected: Does the device is protected by an IOMMU
>>     - next_assigned: Pointer to the next device assigned to the same
>>     domain
> 
> Am I correct that this list is not maintained for dom0? The behaviour of
> dt_assign_device and dt_deassign_device seems to rely on it?

DOM0 will call dt_assign_device for every device protected by the IOMMU
(see patch #9). So it will itself have a list maintained.

Regards,

-- 
Julien Grall

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