Hi Bertrand,
On 10/02/2022 08:32, Bertrand Marquis wrote:
On 10 Feb 2022, at 07:22, tosher 1 <[email protected]> wrote:
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?
On arm there is only one virtualization mode which is equivalent to x86 HVM.
I would like to correct this. Arm guests are more equivalent to x86 PVH
than HVM. For more details, see:
https://wiki.xenproject.org/wiki/Understanding_the_Virtualization_Spectrum#PVH:
This is also why we need a brand new solution for PCI passthrough rather
than piggying back on what was done on HVM in QEMU :).
Cheers,
--
Julien Grall
