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

[Eric Auger <eric.auger@redhat.com>]

Hi,


On 3/3/25 3:32 PM, Philippe Mathieu-Daudé wrote:
> On 27/2/25 18:27, Alex Williamson wrote:
>> 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>
>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
>
>>> 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,
>
> Now (1 week before freeze for release) is a good time to post a patch
> deprecating it :)
Yes I will do that tomorrow

Eric