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Groups > linux.kernel > #1231113
| From | Jiang Liu <jiang.liu@linux.intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: How to ensure that different peripherals getting different IOVA address in kernel? |
| Date | 2015-09-23 04:50 +0200 |
| Message-ID | <qbIi5-7Kb-1@gated-at.bofh.it> (permalink) |
| References | <qbHvI-6uL-7@gated-at.bofh.it> <qbHvI-6uL-5@gated-at.bofh.it> |
| Organization | Intel |
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@vger.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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How to ensure that different peripherals getting different IOVA address in kernel? chenfeng <puck.chen@hisilicon.com> - 2015-09-23 04:00 +0200 Re: How to ensure that different peripherals getting different IOVA address in kernel? Jiang Liu <jiang.liu@linux.intel.com> - 2015-09-23 04:50 +0200 Re: How to ensure that different peripherals getting different IOVA address in kernel? Robin Murphy <robin.murphy@arm.com> - 2015-09-23 14:10 +0200
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