Re: [libvirt] [PATCH RFC 0/1] mdevctl: further config for vfio-ap

On 6/6/19 10:44 AM, Cornelia Huck wrote: > This patch adds a very rough implementation of additional config data > for mdev devices. The idea is to make it possible to specify some > type-specific key=value pairs in the config file for an mdev device. > If a device is started automatically, the device is stopped and restarted > after applying the config. > > The code has still some problems, like not doing a lot of error handling > and being ugly in general; but most importantly, I can't really test it, > as I don't have the needed hardware. Feedback welcome; would be good to > know if the direction is sensible in general. Hi Connie, This is very similar to what I was looking to do in zdev (config via key=value pairs), so I like your general approach. I pulled your code and took it for a spin on an LPAR with access to crypto cards: # mdevctl create-mdev `uuidgen` matrix vfio_ap-passthrough # mdevctl set-additional-config <uuid> ap_adapters=0x4,0x5 # mdevctl set-additional-config <uuid> ap_domains=0x36 # mdevctl set-additional-config <uuid> ap_control_domains=0x37 Assuming all valid inputs, this successfully creates the appropriate mdev and what looks to be a valid mdevctl.d entry. A subsequent reboot successfully brings the same vfio_ap-passthrough device up again.

Matt > > Also available at > > https://github.com/cohuck/mdevctl conf-data > > Cornelia Huck (1): > allow to specify additional config data > > mdevctl.libexec | 25 ++++++++++++++++++++++ > mdevctl.sbin | 56 ++++++++++++++++++++++++++++++++++++++++++++++++- > 2 files changed, 80 insertions(+), 1 deletion(-) >