VirtIO-IOMMU

[mipsH]

Hello.

Since new kernel (5.14) supports VirtIO-IOMMU, maybe it would be a nice one to have it as an advanced option to use (as option: enable/disable).
Linux kernel 5.14. and VirtIO-IOMMU

More details can be found here:
QEMU - VT-d (IOMMU)
VirtIO-IOMMU explained

Br,
Hrvoje.

 

[dcsapak]

there are already patches on the devel list, not applied yet though: https://lists.proxmox.com/pipermail/pve-devel/2022-May/052903.html

 

[mipsH]

there are already patches on the devel list, not applied yet though: https://lists.proxmox.com/pipermail/pve-devel/2022-May/052903.html

So in the future it will be available as an (advanced) option [did not read the diff/changes in code]?.

P.S. I assume that IOMMU part in GRUB2 kernel configuration will also be added (for Intel: intel_iommu=on and eventually: iommu=pt) ?

 

[dcsapak]

So in the future it will be available as an (advanced) option [did not read the diff/changes in code]?.

if the patches get accepted, then yes, it would be an advanced option of the machine type

P.S. I assume that IOMMU part in GRUB2 kernel configuration will also be added (for Intel: intel_iommu=on and eventually: iommu=pt) ?

no, this has nothing to do with the patches at all, since for using viommu you don't have to use real devices, you could also only passthrough virtual nics/disks/etc.

though i am planning on making it easier to activate/edit such things on the gui in the future, but no timeframe for that yet...