Re: [PATCH v7 6/6] drm/panthor: Bump the driver version to 1.9

Jani Nikula
2026-04-15T16:20:18Z

On Wed, 15 Apr 2026, Adrián Larumbe <adrian.larumbe@collabora.com> wrote:
> Hi Jani,
>
> On 15.04.2026 16:54, Jani Nikula wrote:
>> On Wed, 15 Apr 2026, Adrián Larumbe <adrian.larumbe@collabora.com> wrote:
>> > Bump the driver version to reflect the new MMU info query ioctl
>> > parameter and the VM_BIND map sparse flag.
>>
>> You're not actually bumping the version, just adding to the comment.
>
> Forgot to increase the driver's minor revision number, thanks for the catch.
>
>> Does the version actually work for you for checking stuff? Do you have
>> userspace checking it? Should it be some capability thing instead?
>
> We absolutely need it because the UMD must be compatible with previous kernel versions,
> which means in the case of sparse mappings, the old method of creating the dummy BO
> in user mode and then having the Mesa driver do repeated mappings over it through
> successive VM_BIND ioctl's must be available.

Okay, I was just wondering as the last time we bumped i915 version was
nearly 20 years ago. ;D

BR,
Jani.

>
>> BR,
>> Jani.
>>
>> >
>> > Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
>> > ---
>> > drivers/gpu/drm/panthor/panthor_drv.c | 2 ++
>> > 1 file changed, 2 insertions(+)
>> >
>> > diff --git a/drivers/gpu/drm/panthor/panthor_drv.c b/drivers/gpu/drm/panthor/panthor_drv.c
>> > index a8090bc4e33c..c8fb63ede62c 100644
>> > --- a/drivers/gpu/drm/panthor/panthor_drv.c
>> > +++ b/drivers/gpu/drm/panthor/panthor_drv.c
>> > @@ -1787,6 +1787,8 @@ static void panthor_debugfs_init(struct drm_minor *minor)
>> > * - adds DRM_IOCTL_PANTHOR_BO_QUERY_INFO ioctl
>> > * - adds drm_panthor_gpu_info::selected_coherency
>> > * - 1.8 - extends DEV_QUERY_TIMESTAMP_INFO with flags
>> > + * - 1.9 - adds DRM_PANTHOR_DEV_QUERY_MMU_INFO query
>> > + * - adds DRM_PANTHOR_VM_BIND_OP_MAP_SPARSE flag
>> > */
>> > static const struct drm_driver panthor_drm_driver = {
>> > .driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ |
>>
>> --
>> Jani Nikula, Intel
>
> Adrian Larumbe

--
Jani Nikula, Intel