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[Xen-users] Passthrough of USB device on ARM without IOMMU ?

To: "xen-users@xxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxx>
From: "Chris (Christopher) Brand" <chris.brand@xxxxxxxxxxxx>
Date: Thu, 22 Oct 2015 18:20:07 +0000
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Delivery-date: Thu, 22 Oct 2015 18:21:20 +0000
List-id: Xen user discussion <xen-users.lists.xen.org>
Thread-index: AdEM9gklR7CV+3PuRgizZDT6Ym1teg==
Thread-topic: Passthrough of USB device on ARM without IOMMU ?

Hi,

I’d like to give control of a USB device (or bus – whatever is easiest) to domU on my ARM board, which doesn’t have an IOMMU.

It seems that an IOMMU is a prerequisite for passthrough (on ARM, at least). Is there no way to have it mapped into domU memory space 1:1 ? Is there something other than passthrough that I should be looking at ?

Thanks,

Chris

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