Re: [Xen-devel] Xen ARM GPU passthrough without IOMMU

[Julien Grall <julien.grall@xxxxxxx>]

Hi,

On 3/5/19 1:55 AM, jinchen wrote:
>     > Hi,
>     Hello,
>      > I’m using the NXP i.mx8qxp men board and want to create an
>     Android domu on Xen,
>      > but this board doesn’t have IOMMU. Does anyone knows that can I
>     passthrough GPU without IOMMU on it?
>     Device DMA-capable passthrough without IOMMU is not recommended as
>     you would
>     undermine the guest isolation from the rest of the platform.
>     I am not aware of any plan to support this in Xen for now. If you
>     want to add
>     the support by yourself, you would then need to make sure the guest
>     memory is
>     direct mapped (i.e the guest physical address = host physical address).
>     Another alternative is to use PV drivers for providing graphic
>     access to your
>     Android guest.
>     I hope that helps.
>
> Thank you for your answer!
> Do you have some guide for PV drivers to run android domu?
> I can only run to the console in android but can't start the graphic 
> successfully.
I am not familiar with Android running in guest. CCing some people that 
may know.
Cheers,

--
Julien Grall

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