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Date: Wed, 23 Sep 2015 10:42:14 +0800 From: Jiang Liu <jiang.liu@...ux.intel.com> To: chenfeng <puck.chen@...ilicon.com>, joro@...tes.org, iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, rcallicotte@...il.com, robin.murphy@....com Cc: Dan zhao <dan.zhao@...ilicon.com>, qijiwen <qijiwen@...ilicon.com>, Peter Panshilin <peter.panshilin@...ilicon.com>, Suzhuangluan <suzhuangluan@...ilicon.com>, Yiping Xu <xuyiping@...ilicon.com>, "Wangfei (William, Euler)" <w.f@...wei.com> Subject: Re: How to ensure that different peripherals getting different IOVA address in kernel? 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-A、peri-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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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