Re: [PATCH v2] drm/msm/iommu: optimize map/unmap

[Sai Prakash Ranjan]

On 8/23/2022 10:07 PM, Rob Clark wrote:
> From: Rob Clark <robdclark@xxxxxxxxxxxx>
>
> Using map_pages/unmap_pages cuts down on the # of pgtable walks needed
> in the process of finding where to insert/remove an entry.  The end
> result is ~5-10x faster than mapping a single page at a time.
>
> v2: Rename iommu_pgsize(), drop obsolete comments, fix error handling
>      in msm_iommu_pagetable_map()
>
> Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
> ---
>   drivers/gpu/drm/msm/msm_iommu.c | 101 +++++++++++++++++++++++++++-----
>   1 file changed, 86 insertions(+), 15 deletions(-)

Reviewed-by: Sai Prakash Ranjan <quic_saipraka@xxxxxxxxxxx>

Thanks,
Sai