Re: [Xen-devel] [PATCH v3 17/24] xen/passthrough: arm: release earlier the DT devices assigned to a guest

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 20.02.15 at 18:46, <julien.grall@xxxxxxxxxx> wrote:
> 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.grall@xxxxxxxxxx>
>>> Cc: Jan Beulich <jbeulich@xxxxxxxx>
>> 
>> Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
>> 
>> I'd like to hear Jan's opinion though.
> 
> FWIW, this is how it's done for PCI.

Right, IOW I agree to the idea of the patch.

Jan


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