Messages in this thread | | | Subject | Re: [PATCH V2 2/3] Add iommu driver for hi6220 SoC platform | From | chenfeng <> | Date | Fri, 23 Oct 2015 17:10:31 +0800 |
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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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