[PATCH v5 07/17] dma-mapping: Implement link/unlink ranges API

[Jason Gunthorpe]

On Wed, Jan 15, 2025 at 10:33:40AM +0200, Leon Romanovsky wrote:
> > > +	do {
> > > +		phys_addr_t phys;
> > > +		size_t len;
> > > +
> > > +		phys = iommu_iova_to_phys(domain, addr);
> > > +		if (WARN_ON(!phys))
> > > +			continue;
> > 
> > Infinite WARN_ON loop, nice.
> 
> No problem, will change it to WARN_ON_ONCE.

I think the other point is that the addr doesn't increase, so this
loop will lock up.

Possibly just do return? I suppose something is hopelessly corrupted
if we ever hit this..

Jason