Hi Stefano, On 04/10/2019 02:14, Stefano Stabellini wrote:
+ +Dom0-less Device Passthrough +============================ + +The partial device tree for dom0-less guests should have the following +properties for each node corresponding to a physical device to assign to +the guest: + +- xen,reg + + The xen,reg property is an array of: + + <phys_addr size guest_addr> + + They specify the physical address and size of the device memory + ranges together with the corresponding guest address to map them to. + The size of `phys_addr' and `guest_addr' is determined by + #address-cells, the size of `size' is determined by #size-cells, of + the partial device tree. + The memory will be mapped as device memory in the guest (Device-nGnRE). + +- xen,path + + A string property representing the path in the host device tree to the + corresponding device node. + +- xen,force-assign-without-iommu
Please add a newline here to match the rest of the documentation. With that: Acked-by: Julien Grall <[email protected]> Cheers,
+ If xen,force-assign-without-iommu is present, Xen allows to assign a + device even if it is not behind an IOMMU. This renders your platform + *unsafe* if the device is DMA-capable.
-- Julien Grall _______________________________________________ Xen-devel mailing list [email protected] https://lists.xenproject.org/mailman/listinfo/xen-devel
