Re: [PATCH v2 10/15] accel/qda: Add GEM_CREATE and GEM_MMAP_OFFSET IOCTLs

[Ekansh Gupta]

On 18-08-2026 09:19, Dmitry Baryshkov wrote:
> On Mon, Aug 17, 2026 at 10:17:45AM +0530, Ekansh Gupta wrote:
>> Expose two new DRM IOCTLs that allow user-space to allocate DMA-backed
>> GEM buffer objects and retrieve their mmap offsets.
>>
>> DRM_IOCTL_QDA_GEM_CREATE (drm_qda_gem_create)
>>   Allocates a DMA-coherent GEM buffer of the requested size. The
>>   memory manager assigns an IOMMU context bank to the calling process
>>   on first use and performs the DMA allocation against that bank.
>>   Returns a GEM handle that identifies the buffer for subsequent
>>   operations.
>>
>> DRM_IOCTL_QDA_GEM_MMAP_OFFSET (drm_qda_gem_mmap_offset)
>>   Returns the mmap offset for an existing GEM handle. The offset can
>>   be passed directly to mmap() to map the buffer into user-space.
>>   Imported DMA-BUF objects are rejected by drm_gem_dumb_map_offset().
>>
>> DRIVER_GEM is added to driver_features now that GEM IOCTLs are
>> present.
>>
>> Assisted-by: Claude:claude-sonnet-5
>> Signed-off-by: Ekansh Gupta <ekansh.gupta@xxxxxxxxxxxxxxxx>
>> ---
>>  drivers/accel/qda/qda_drv.c   |  4 +++-
>>  drivers/accel/qda/qda_ioctl.c | 50 +++++++++++++++++++++++++++++++++++++++++++
>>  drivers/accel/qda/qda_ioctl.h |  2 ++
>>  include/uapi/drm/qda_accel.h  | 36 +++++++++++++++++++++++++++++++
>>  4 files changed, 91 insertions(+), 1 deletion(-)
>>
> 
> The patch LGTM. THe commit messages needs a rewrite
will fix to commit message, thanks.>