[PATCH] iommu/arm-smmu-v3: Stop queue allocation retry at PAGE_SIZE

[Leo Jiang]

On Fri, May 08, 2026 at 02:53:06PM +0000, Pranjal Shrivastava wrote:

> On Wed, Apr 22, 2026 at 05:13:08PM +0800, Leo Jiang wrote:
> > Hi Will, Robin,
> > 
> > Thank you both for the detailed feedback.
> > 
> > Robin, you are absolutely correct. After a deeper look into the source code,
> > I see that allocations smaller than a page are indeed possible in certain
> > cases. My previous assumption about the DMA API's granularity was wrong,
> > and I appreciate the correction.
> > 
> > However, as Will noted that the current logic deviates from the original
> > intent, I have prepared a v2 to limit the queue allocation retry boundary
> > to PAGE_SIZE.
> > 
> > In v2, I have:
> >  - Updated my identity to Leo Jiang.
> >  - Removed the code comments as suggested.
> > 
> > I will send the v2 as a follow-up shortly.
> 
> Hi Leo,
> 
> The general guidance is to send the v2 as a fresh email so that it
> doesn't drop off the commmunity's radar.
> 
> Thanks,
> Praan

Thanks for the guidance, Praan. I'll send v2 as a fresh thread shortly.

Best regards,
Leo Jiang