[PATCH v3 3/4] iommu/arm-smmu-v3: Add support for dirty tracking in domain alloc

[Jason Gunthorpe]

On Wed, May 22, 2024 at 07:16:27AM +0000, Tian, Kevin wrote:

> >  	case ARM_SMMU_DOMAIN_S2:
> > -		ias = smmu->ias;
> > -		oas = smmu->oas;
> > +		pgtbl_cfg.ias = smmu->ias;
> > +		pgtbl_cfg.oas = smmu->oas;
> >  		fmt = ARM_64_LPAE_S2;
> >  		break;
> 
> so dirty-tracking is not supported by s2? what about nesting?

To be done later IIRC

> if this is desired then attempting to set dirty_tracking on a s2 domain
> should be rejected with an error.

Yes

Jason