On 20/02/15 17:03, Ian Campbell wrote:
> On Tue, 2015-01-13 at 14:25 +0000, Julien Grall wrote:
> 
> Subject: "release the DT devices assigned to a guest earlier"
> 
>> The toolstack may not have deassign every device used by a guest.
> 
> "deassigned"
> 
>> Therefore we have to go through the device list and removing them before
> 
> "and remove them"
> 
>> asking the IOMMU drivers to release memory for this domain.
>>
>> This can be done by moving the call to the release function when we
>> relinquish the resources. The IOMMU part will be destroyed later when
>> the domain is freed.
>>
>> Signed-off-by: Julien Grall <julien.gr...@linaro.org>
>> Cc: Jan Beulich <jbeul...@suse.com>
> 
> Acked-by: Ian Campbell <ian.campb...@citrix.com>
> 
> I'd like to hear Jan's opinion though.

FWIW, this is how it's done for PCI.

Regards,

-- 
Julien Grall

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