Le 26/08/22 à 08:39, Dominik Csapak a écrit : > On 8/25/22 16:53, DERUMIER, Alexandre wrote: >> > root@pve2:~# qm start 101 >> > ignoring mediated device with multifunction device >> >> ok, it's simply that indeed I have specify a multifunction path >> "0000:02". >> >> I think it should better/safe to die here, instead to simply warn and >> continue. > i agree die'ing here is better, for the mapped case we could do that now, > but for the old case of a pciid we can't (for backwards compat) until 8.0 > > [snip] > >>> >>> maybe not related, but after that, stop/start are not working anymore >>> >>> root@pve2:~# qm stop 101 >>> PCI device mapping invalid (hardware probably changed): 'mdev' >>> configured but should not be >>> >>> root@pve2:~# qm start 101 >>> PCI device mapping invalid (hardware probably changed): 'mdev' >>> configured but should not be >>>
I can reproduce this 100%, if the start with mdev of multifunction path fallback to classic pci passthrough. and I was able to configure this on the vm pci configuration. No sure, maybe I have configure the mapping with single function, configure the vm, then change the mapping with multifunction. I see that currently it's possible to mix multifunction, single function devices in same mapping group. I wonder if it couldn't be better to add an option on the group, to define "multifunction=on/off , mdev=on/off. then only add devices with theses 2 options, don't mix different kind of devices. Also, multifuction && mdev can't be changed on the group if devices are already in the group. > > i had this also happen here once, when we do 'normal' pci passthrough > we reset the devices (via sysfs) and it seems the nvidia driver/card > does not like that and does not enable the mediated devices until > a reboot .... > > the code then sees a hardware/feature mismatch and refuses to start. > this is done to prevent a start with passthrough on hardware change, > i.e. if someone adds/removes a device and suddenly > the device at path X is not the same anymore) > _______________________________________________ pve-devel mailing list pve-devel@lists.proxmox.com https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
