Re: [PATCH] content: Reserve ID 52 for Snapdragon device

[Jan Kiszka <jan.kiszka@siemens.com>]

On 27.08.26 18:17, Peter Hilber wrote:
> On Wed, Aug 26, 2026 at 05:31:54PM +0200, Jan Kiszka wrote:
>> On 26.08.26 13:55, Peter Hilber wrote:
>>> Reserve a device ID for the Snapdragon device.  A Virtio Snapdragon
>>> device exposes functionality across Snapdragon SoC subsystems through a
>>> common Virtio-based protocol.
>>>
>>
>> Virtio is supposed to provide generic hardware models, not so much a
>> channel to expose concrete, physical chip IP over it. This looks very
>> weird to me.
> 
> The Snapdragon device is not planned to undergo standardization, so it
> should be acceptable as argued by Stefan.  Qualcomm has some Linux
> kernel Virtio drivers which are intended for upstreaming, and as such
> need a reserved device ID.
> 

Thanks for confirming.

But I'm personally not convinced that this is a pattern the virtio
specification should support, even if we had plenty of free space. It is
one thing to reserve an ID for a conceptually hardware-agnostic device
type where there is at least the possibility to standardize this one
day. But doing that for a single-vendor hardware which is likely not to
survive very long (seen that way too often...), this just seems wrong.

Jan

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