Re: PCI passthrough support for PVH mode

[tosher 1 <akm2tosher@xxxxxxxxx>]

Hi Jan,

Thanks for letting me know this status.

I am wondering if PCI passthrough is at least available in Arm for other 
virtualization modes like PV, HVM, or PVHVM. For example, is it possible for 
someone to attach a PCI device to a guest domain on an Arm machine and use that 
domain as a driver domain, like we can do with the Xen on x86?

Please let me know.

Regards,
Mehrab




On Monday, February 7, 2022, 02:57:45 AM EST, Jan Beulich <jbeulich@xxxxxxxx> 
wrote: 





On 06.02.2022 06:59, tosher 1 wrote:

> Back in the year 2020, I was inquiring into the status of PCI passthrough 
> support for PVH guests. At that time, Arm people were working on using vPCI 
> for guest VMs. The expectation was to port that implementation to x86 once 
> ready.
> 
> I was wondering if there is any update on this. Does Xen support PCI 
> passthrough for PVH mode yet? Please let me know.


The Arm work is still WIP, and in how far it's going to be straightforward to
re-use that code for x86 is still unclear (afaict at least).

Jan