Re: [PATCH 2/2] vfio: Make vfio-platform available on Aarch64 platforms only

[Alex Williamson <alex.williamson@redhat.com>]

On Thu, 27 Feb 2025 09:32:46 +0100
Eric Auger <eric.auger@redhat.com> wrote:

> Hi Cédric,
> 
> On 2/26/25 9:47 AM, Cédric Le Goater wrote:
> > VFIO Platforms was designed for Aarch64. Restrict availability to
> > 64-bit host platforms.
> >
> > Cc: Eric Auger <eric.auger@redhat.com>
> > Signed-off-by: Cédric Le Goater <clg@redhat.com>  
> Reviewed-by: Eric Auger <eric.auger@redhat.com>
> 
> As an outcome from last KVM forum, next step may be to simply remove
> VFIO_PLATFORM from the qemu tree.
> 
> We also need to make a decision wrt linux vfio platform driver. As I
> can't test it anymore without hacks (my last tegra234 mgbe works are
> unlikely to land on qemu side and lack traction on kernel side too),
> either someone who can test it volunteers to take over the kernel
> maintainership or we remove it from kernel too.

I think it's more than just a kernel maintainer stepping up to test,
there really needs to be some in-kernel justification for the
vfio-platform driver itself.  If it's only enabling out of tree use
cases and there's nothing in-tree that's actually independently
worthwhile, I don't really see why we shouldn't remove it and just let
those out of tree use cases provide their own out of tree versions of
vfio-platform.  Thanks,

Alex