Re: How to ensure that different peripherals getting different IOVA address in kernel?

[Jiang Liu]

On 2015/9/23 9:55, chenfeng wrote:
> Hi all,
> 
> In IOMMU architecture , how to make two different peripherals share the same page table ?
> 
> In other words , is there a mechanism or structure to make two peripherals get completely different address.
> 
> eg:
> 
> peri-Aãperi-B and peri-C share the same iova address 0-1G for some performance requests.
> 
> So the A,B,C need to use the same IOVA generator to ensure this,but I don't find an architecture to make this.
> 
> Any help will be appreciated.
Hi Chenfeng,
	Seems IOMMU group may help you, please take a look at
Documentation/vfio.txt.
Thanks!
Gerry
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