Re: [PATCH 1/7] iommu/vt-d: Add domain_alloc_paging support

From: Jason Gunthorpe
Date: Fri Oct 11 2024 - 12:33:11 EST


On Fri, Oct 11, 2024 at 10:22:52AM -0300, Jason Gunthorpe wrote:
> On Fri, Oct 11, 2024 at 12:27:16PM +0800, Lu Baolu wrote:
>
> > +static struct iommu_domain *intel_iommu_domain_alloc_paging(struct device *dev)
> > +{
> > + struct dmar_domain *dmar_domain;
> > + bool first_stage;
> > +
> > + first_stage = first_level_by_default(0);
> > + dmar_domain = paging_domain_alloc(dev, first_stage);
> > + if (IS_ERR(dmar_domain))
> > + return ERR_CAST(dmar_domain);
> > +
> > + return &dmar_domain->domain;
> > +}
>
> With the direction that Vasant's series is going in, I think this
> should be skipped and instead your other patch to make
> domain_alloc_user (which we will rename) a full functional replacement
> is the right thing.

Though I guess for patch ordering purposes it makes sense to just
leave this and remove it the next cycle

Jason