Hi Robin,
On 2015/10/20 23:02, Robin Murphy wrote:
> On 20/10/15 09:45, Chen Feng wrote:
>> iommu/hisilicon: Add hi6220-SoC smmu driver
>
>> +
>> +static int hi6220_smmu_attach_dev(struct iommu_domain *domain,
>> + struct device *dev)
>> +{
>> + dev->archdata.iommu = &iova_allocator;
>
> If the hardware doesn't offer any kind of device isolation (i.e. multiple translation contexts), then you should probably have more logic here to ensure only a single domain can ever be active at once.
>
>> + return 0;
>> +}
>> +
I feel confused about your above comments. Could you help explain "ensure only a single domain can ever be active at once"?
> Robin.
>
>
> .
>
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