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Re: [Xen-devel] Regarding hdmi sharing in xen

Dear George,

First I would state terms as following:
* Sharing HW - using the same hardware by different domains using PV drivers, so actually one domain accessing the HW directly and serves other domains. * Assigning HW - providing access to some particular HW for some particular domain. E.g. peripherals by default are assigned to Dom0, but using Passthrough some could be assigned to DomU.

On 19.07.17 07:41, George John wrote:
Our plan is to run Linux as Dom0 and Android as DomU. The Linux portion will be having 1 HDMI display and the Android porion will be having 1 HDMI.
Can we share the DU and use the HDMI port as it is in the guests?
IIRC last year it was shown a setup with Salvator-X board, where one HDMI display was *assigned* to Linux (Dom0) and one HDMI display was *assigned* to Android. So such setup is technically feasible. If a domain has assigned a display to use solely, it can share that display to other domains using displif protocol [1].

[1] https://lists.xenproject.org/archives/html/xen-devel/2017-04/msg00470.html


*Andrii Anisov*

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