Re: [PATCH v2 3/3] iommu/vt-d: Make the blocked domain support PASID

[Yi Liu <yi.l.liu@xxxxxxxxx>]

On 2024/10/18 23:54, Jason Gunthorpe wrote:
> On Thu, Oct 17, 2024 at 10:58:24PM -0700, Yi Liu wrote:
>
> > -static void intel_iommu_remove_dev_pasid(struct device *dev, ioasid_t pasid,
> > -					 struct iommu_domain *domain)
> > +static int blocking_domain_set_dev_pasid(struct iommu_domain *domain,
> > +					 struct device *dev, ioasid_t pasid,
> > +					 struct iommu_domain *old)
> >   {
> >   	struct device_domain_info *info = dev_iommu_priv_get(dev);
> >   	struct intel_iommu *iommu = info->iommu;
> > @@ -4292,10 +4298,12 @@ static void intel_iommu_remove_dev_pasid(struct device *dev, ioasid_t pasid,
> >   				    INTEL_PASID_TEARDOWN_DRAIN_PRQ);
> >   
> >   	/* Identity domain has no meta data for pasid. */
> > -	if (domain->type == IOMMU_DOMAIN_IDENTITY)
> > -		return;
> > +	if (old->type == IOMMU_DOMAIN_IDENTITY)
> > +		goto out;
>
> Just return 0

got it.

--
Regards,
Yi Liu