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SubjectRe: [PATCH] vfio powerpc: enabled on powernv platform
On 08/12/12 04:38, Alex Williamson wrote:
>> +static int __init tce_iommu_init(void)
>> +{
>> + struct pci_dev *pdev = NULL;
>> + struct iommu_table *tbl;
>> + struct iommu_group *grp;
>> +
>> + /* Allocate and initialize IOMMU groups */
>> + for_each_pci_dev(pdev) {
>> + tbl = get_iommu_table_base(&pdev->dev);
>> + if (!tbl)
>> + continue;
>> +
>> + /* Skip already initialized */
>> + if (tbl->it_group)
>> + continue;
>> +
>> + grp = iommu_group_alloc();
>> + if (IS_ERR(grp)) {
>> + pr_info("tce_vfio: cannot create new IOMMU group, ret=%ld\n",
>> + PTR_ERR(grp));
>> + return PTR_ERR(grp);
>> + }
>> + tbl->it_group = grp;
>> + iommu_group_set_iommudata(grp, tbl, group_release);
>
> BTW, groups have a name property that shows up in sysfs that can be set
> with iommu_group_set_name(). IIRC, this was a feature David requested
> for PEs. It'd be nice if it was used for PEs... Thanks,



But what would I put there?... IOMMU ID is more than enough at the moment
and struct iommu_table does not have anything what would have made sense to
show in the sysfs...


--
Alexey


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