Hi I need the e820_host option for a passthrough of an digitaldevices dvb-s2 card. Without this I'cant initialize the card in the domU. On an all my domU's with high IO load like an file server I need to set max_grant_frames = 64 or higher. Without this I get a lot of messages on dom0/domU and kernel exceptions. I've read it should be ok to set it = 256 on all domU's (somewhere on SuSE pages), so if there is a possibility to set it global on hyperviser, this could be a solution for me. With xl.conf it is possible but libvirt doesnt look there for the settings. I've tried to set it in libxl.conf, but this doesnt work to. Am 2019-01-04 18:42, schrieb Jim Fehlig:
On 1/4/19 9:14 AM, Christoph wrote:
Hi
Does someone know how it is possible these parameters:
e820_host max_grant_frames
to set with libvirt xml config?
Currently, those settings are not supported by libvirt. Do you need to adjust them for PCI passthrough to PV domains?
I took a quick peek at xl.cfg(5) and based on the description of those settings didn't see a counterpart in the libvirt domain schema. Perhaps understanding use-cases will help with modeling those settings in libvirt domain XML.
Regards, Jim
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