Hi Guys, I'm currently using XEN in order to run side-by-side a DOM-0 with a DOM-U guest. My use-case scenario requires in the DOM-U direct access to some dma-capable devices such ethernet and some GPUs.
Since our target platform (i.MX8MM) does not support IOMMU, we can't assign dma-capable devices to the DOM-U guest because XEN does not create 1:1 mapping for that guest in the 2nd stage MMU. So, guest-virtual addresses are different than the physical ones. Is it possible to have 1:1 mapping for DOM-U guests? If not, I'm interested to know what would be the estimated effort to support this feature? Thanks in advance, Cheers, Jorge
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