On Mon, 2015-10-05 at 06:00 +0000, Bhushan Bharat wrote:
> > -1138,6 +1156,8 @@
> > > static long vfio_iommu_type1_ioctl(void *iommu_data,
> > > }
> > > } else if (cmd == VFIO_IOMMU_GET_INFO) {
> > > struct vfio_iommu_type1_info info;
> > > + struct iommu_domain_msi_maps msi_maps;
> > > + int ret;
> > >
> > > minsz = offsetofend(struct vfio_iommu_type1_info,
> > iova_pgsizes);
> > >
> > > @@ -1149,6 +1169,18 @@ static long vfio_iommu_type1_ioctl(void
> > > *iommu_data,
> > >
> > > info.flags = 0;
> > >
> > > + ret = vfio_domains_get_msi_maps(iommu, &msi_maps);
> > > + if (ret)
> > > + return ret;
> >
> > And now ioctl(VFIO_IOMMU_GET_INFO) no longer works for any IOMMU
> > implementing domain_get_attr but not supporting
> > DOMAIN_ATTR_MSI_MAPPING.
>
> With this current patch version this will get the default assumed behavior as
> you commented on previous patch.
How so?
+ msi_maps->automap = true;
+ msi_maps->override_automap = false;
+
+ if (domain->ops->domain_get_attr)
+ ret = domain->ops->domain_get_attr(domain, attr, data);
If domain_get_attr is implemented, but DOMAIN_ATTR_MSI_MAPPING is not,
ret should be an error code.
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