Displaying 4 results from an estimated 4 matches for "iommu_get_msi_cooki".
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iommu_get_msi_cookie
2023 Feb 17
1
[PATCH v2] vhost/vdpa: Add MSI translation tables to iommu for software-managed MSI
...e address from
> > iommu reserved region, and set it to iommu MSI cookie,
> > then translation tables will be created while request irq.
>
> Probably not what anyone wants to hear, but I would prefer we not add
> more uses of this stuff. It looks like we have to get rid of
> iommu_get_msi_cookie() :\
>
> I'd like it if vdpa could move to iommufd not keep copying stuff from
> it..
Yes, but we probably need a patch for -stable.
>
> Also the iommu_group_has_isolated_msi() check is missing on the vdpa
> path, and it is missing the iommu ownership mechanism.
Ok.
>...
2023 Feb 17
1
[PATCH v2] vhost/vdpa: Add MSI translation tables to iommu for software-managed MSI
...iommu reserved region, and set it to iommu MSI cookie,
> > > then translation tables will be created while request irq.
> >
> > Probably not what anyone wants to hear, but I would prefer we not add
> > more uses of this stuff. It looks like we have to get rid of
> > iommu_get_msi_cookie() :\
> >
> > I'd like it if vdpa could move to iommufd not keep copying stuff from
> > it..
>
> Yes, but we probably need a patch for -stable.
Hmm do we? this looks like it's enabling new platforms is not a bugfix...
> >
> > Also the iommu_group_has_i...
2023 Feb 20
1
[PATCH v2] vhost/vdpa: Add MSI translation tables to iommu for software-managed MSI
...d set it to iommu MSI cookie,
> > > > then translation tables will be created while request irq.
> > >
> > > Probably not what anyone wants to hear, but I would prefer we not add
> > > more uses of this stuff. It looks like we have to get rid of
> > > iommu_get_msi_cookie() :\
> > >
> > > I'd like it if vdpa could move to iommufd not keep copying stuff from
> > > it..
> >
> > Absolutely but when is that happening?
>
> Don't know, I think it has to come from the VDPA maintainers, Nicolin
> made some drafts but...
2023 Feb 16
0
[PATCH v2] vhost/vdpa: Add MSI translation tables to iommu for software-managed MSI
...(region->type == IOMMU_RESV_MSI)
> + with_hw_msi = true;
> +
> + if (region->type == IOMMU_RESV_SW_MSI) {
> + resv_msi_base = region->start;
> + with_sw_msi = true;
> + }
> + }
> +
> + if (!ret && !with_hw_msi && with_sw_msi)
> + ret = iommu_get_msi_cookie(domain, resv_msi_base);
> +
> + iommu_put_resv_regions(dma_dev, &dev_resv_regions);
> +
> + return ret;
> +}
As discussed in v1, I still prefer to factor out the common logic and
move them to iommu.c. It helps to simplify the future bug fixing and
enhancement.
> +
>...