Re: [RFC PATCH 0/3] gpu: nova-core: add basic timer subdevice implementation

["John Hubbard" <jhubbard@nvidia.com>]

On Thu Feb 27, 2025 at 1:42 PM PST, Dave Airlie wrote:
> On Thu, 27 Feb 2025 at 11:34, John Hubbard <jhubbard@nvidia.com> wrote:
>> On Wed Feb 26, 2025 at 5:02 PM PST, Greg KH wrote:
>> > On Wed, Feb 26, 2025 at 07:47:30PM -0400, Jason Gunthorpe wrote:
...
> nova is just a drm driver, it's not a rewrite of the drm subsystem,
> that sort of effort would entail a much larger commitment.

Maybe at this point in the discussion it would help to discern between
nova-core and nova-drm:

    drivers/gpu/nova-core/ (under discussion here)
    drivers/gpu/drm/nova/ (Future)

...keeping in mind that nova-core will be used by other, non-DRM things,
notably VFIO.

>
> DRM has reasons for doing what drm does, that is a separate discussion
> of how a rust driver fits into the DRM. The rust code has to conform
> to the C expectations for the subsystems they are fitting into.
>
> The drm has spent years moving things to devm/drmm type constructs,
> adding hotplug with the unplug mechanisms, but it's a long journey and
> certainly not something nova would want to wait to reconstruct from
> scratch.

ack.

thanks,
John Hubbard