Am Mon, 27 Jan 2020 11:54:37 +0000 schrieb "Durrant, Paul" <pdurr...@amazon.co.uk>:
> > Should the string "pc-i440fx-3.0" become a configure option? > I suppose. Could we have "pc-i440fx" as the default, which libxl prefix > matches against qemu's supported versions to select the latest? I think the qemu machine variant must become a property of the running domU, so that it will not get lost during migration. For incoming domUs without such property some default must be selected by libxl. libxl at runtime has no info what the initial qemu command was. So this fallback must become a compile or runtime knob as well. Not sure if it would be too cumbersome for host admins to apply the equivalent of "device_model_args_hvm=" to a five or six digit number of running domUs during or prior their migration. There should be a --qemuu-hvm-machine, which may just default to 'pc-1.0' if not specified. That string should go to domain_build_info.u.hvm.qemuu_machine, so that it becomes part of the domU properties. Olaf
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